Alex pulled the membrane from the foal's nose and stepped back.
pit-threads whIch traverse the closing membrane of the pits in the FIG.
16), extending between the fenestra ovalis and the tympanic membrane or drum, consists of (I) the long and slen der columella, a straight, ossified rod which fits with a disk into the fenestra r; t st ovalis; it is homologous with the stapes (m.st.), although not stirrupshaped; (2) the extra-columellar mass.
HaberIandt has shown that in plant cells, when any new formation of membrane is to take place in a given spot, the nucleus is found in its immediate vicinity; and Klebs found that only that portion of the protoplasm of a cell which contains the nucleus is capable of forming a cell-wall; whilst Townsend has further shown that if the non-nucleated mass is connected by strands of protoplasm to the nucleated mass, either of the same cell or of a neighboring cell, it retains the power of forming a cell-membrane.
The Structure of the Nucleus.In the living condition the resting nucleus appears to consist of a homogeneous ground substance containing a large number of small chromatin granules and one or more large spherical granulesnucleolithe whole being surrounded by a limiting membrane which separates it from the cytoplasm.
Coincident with these changes the nuclear membrane disappears and a spindle-shaped or barrelshaped group of threads makes its appearance in.
Their numbers vary from one pair to seven, and they are inserted either upon the middle portion of the bronchial semi-rings (Mesomyodi), or upon the ends of these semi-rings where these pass into the inner tympaniform membrane (Acromyodi).
The naked cells which have been alluded to live in water, and call therefore for no differentiation in connection with this necessity; but those which are surrounded by a cell-wall always develop within themselves a vacuole or cavity which occupies the greater part of their interior, and the hydrostatic pressure of whose contents keeps tha protoplasm in contact with the membrane, setting up a condition of turgidity.
9, G) is conspicuous on either side of the first of this membrane delicate sac containing fluid, connected with which are the actual nerve-endings.
In Pteromys the tail is cylindrical and comparatively thin, while in Sciuropterus it is broad, flat and laterally expanded, so as to compensate for the absence of the interfemoral membrane by acting as a supplementary parachute.
influence on the efficiency of the instrument, and it was ultimately ascertained that a small central opening, with a thin air space extending across the face of the membrane, was best.
The olfactory perceptive membrane is restricted to the posterior innermost region of the nasal chamber, where it covers a slight bulging-out prominence on the nasal wall.
c, Cellular tissue of the integument; Bm, basement membrane; cire.
The nymph of a thrips-insect (Thysanoptera) is sluggish, its legs and wings being sheathed by a delicate membrane, while the nymph of the male scaleinsect rests enclosed beneath a waxy covering.
The use of the term to mean the individualized nucleated mass of living protoplasm, which, whether with or without a limiting membrane, primitively forms the proximate histological element of the body of every organism, dates from the second quarter of the i9th century.
In Carinella, Cephalothrix and Polia, as well as in all Metanemertines, the basement membrane of the skin already alluded to is particularly strong and immediately applied upon the muscular layers.
2, L), a nucleolus appears, a nuclear membrane is formed, and daughter nuclei are thus constituted which possess the same structure and staining reactions as the mother nucleus.
Those organisms which possess the latter are a little higher in the scale of life than those which remain unclothed by it, but a comparison of the behaviour of the two quickly enables us to say that the membrane is of but secondary importance, and that for those which possess it, it is nothing more than a protective covering for the living substance.
Reis caused a membrane to open and close an electric 2 See his Scientific Papers, P. 47.
The cytoplasm is largely concerned in the formation of spindle fibres and centrosomes, and such structures as the cell membrane, cilia, or flagella, the coenocentrum, nematoplasl~ or vibrioids and physodes are also products of its activity.
The workers in question remain within the nest, suspended by their feet, and serve as living honey-pots for the colony, becoming so distended by the supplies of honey poured into their mouths by their foraging comrades that their abdomens become sub-globular, the pale intersegmental membrane being tightly stretched between the widely-separated dark sclerites.
When the connecting string is held taut and sounds, such as those of ordinary speech, are produced in front of one of the membranes, pulses corresponding to the fluctuations of the atmospheric pressure are transmitted along the string and communicated to the other membrane, which in its turn communicates them to the air, thus reproducing the sound.
Birds possess an ear-muscle which at least acts as a tensor tympani; it arises near the occipital condyle, passes through a hole into the tympanic cavity, and its tendon is, in various ways, attached to the inside of the membrane and the neighbouring extracolumellar processes.
The apex of the cochlea is turned towards, and almost reaches the anterior wall of the occipital condyle; at most it makes but half a twist or turn; it possesses both Reissner's membrane and the organ of Corti.
But all cells which are permanent tissue-elements of the plantbody possess, in addition, a more or less rigid limiting membrane or cell-wall, consisting primarily of cellulose or some allied substance.
later on fused with, a pair of membrane bones, the basi-temporals, homologous in part with the parasphenoid of lower vertebrates.
The passage from this tegumentary layer to the subjacent longitudinal muscular one is gradual, no membrane separating them.
All birds have, like most reptiles, a well-developed third lid or "nictitating membrane," which moves from the inner canthus obliquely upwards and backwards over the cornea.
In some polyps the tentacles are webbed at the base, and it was supposed that a medusa was a polyp of this kind set free, the umbrella being a greatly developed web or membrane extending between the tentacles.
He proposed to make the armature partake of the vibrations of the atmosphere either by converting it into a suitable vibrator or by controlling its vibrations by a stretched membrane of parchment armature had the form of a hinged lever one end, which pressed against the centre.
These two endoderm-rudiments embryonic membrane formed by delamination from the blastoderm, ultimately grow together and give rise to the epithelium of the midwhile in a few insects, including the wingless spring-tails, the emgut.
Cell Membrane.The membrane which surrounds the protoplasts in the majority of plants is typically composed of cellulose, together with a number of other substances which are known as pectic compounds.
Again, the form of the opening or mouthpiece in front of the membrane exercised considerable 1 See A.
The suggestion of Bourseul and the experiments of Reis are founded on the idea that a succession of currents, corresponding in number to the successive undulations of the pressure on the membrane of the transmitting instrument, could reproduce at the receiving station sounds of the same character as those produced at the sending station.
His aim was the production, by means of the undulations of pressure on a membrane caused by sound, of an electric current the strength of which should at every instant vary directly as the pressure varied).
M was a membrane stretched by a ring R over the end of a tube T fixed at one side of the frame F.
Arboreal species include the well-known opossums (Phalanger); the extraordinary tree-kangaroo of the Queensland tropics; the flying squirrel, which expands a membrane between the legs and arms, and by its aid makes long sailing jumps from tree to tree; and the native bear (Phascolarctos), an animal with no affinities to the bear, and having a long soft fur and no tail.
Venovenous (V-V) bypass-The type of extracorporeal membrane oxygenation that provides lung support only, using a tube inserted into the jugular vein.
Herniation-Bulging of tissue through opening in a membrane, muscle, or bone.
Gore-Tex Technology is the membrane that leads the world in keeping feet dry, thereby maintaining a perfect inner climate in all weather.
Gore-Tex is basically a waterproof breathable membrane that inhibits moisture both from collecting and arriving.
The Alpha is a waterproof boot of full-grain leather with a waterproof membrane, sympatex lining, removable molded ortholite footbed and the Hummer exclusive all-terrain tire tread interlocking log pattern outsole.
The envelope is double, consisting of an external chitinous stratified shell, and an internal thin elastic membrane.
In a few cases both among the higher and the lower plants, of which the formation of spores in the ascus is a typical example, new cells are formed by the aggregation of portions of the cytoplasm around the nuclei which become delimited from the rest of the cell iontents by a membrane.
The nuclei of the original cells persist in the protoplasmic membrane.
This arises from the nasal surface of the ball, and its tendon passes into the somewhat imperfectly transparent nictitating membrane.
or " vertex," the compound eyes and the front divisions of the genae are formed by the cephalic lobes of the embryo (belonging membrane analogous to the amnion of higher Vertebrates andto the ocular segment), while the mandibular and maxillary segments known by the same term.
The difference in the appearance of the basement membrane - sometimes wholly homogeneous, sometimes eminently fibrillar = can more especially be observed in differently preserved specimens of the genus Polia.
The connective tissue of the integument and basement membrane imperceptibly merges into that which surrounds the muscular bundles as they are united into denser and definite layers, and this is especially marked in those forms (Akrostomum) where the density of the muscular body-wall has considerably diminished, and the connective tissue has thus become much more prominent.
B, Basement membrane.
At the end of each twig is a membrane pierced by pores, and a number of cilia depend into the lumen of the tube; these cilia maintain a constant motion.
Correlated with the presence of the genital pleurae there is a pair of vascular folds of the basement membrane proceeding from the dorsal wall of the gut in the postbranchial portion of the branchio-genital region, and from the dorsal angles made by the pleural folds with the body-wall in the pharyngeal region; they pass, in their most fully developed condition, to the free border of the genital pleurae.
(A portion of the fringe of cirri is removed to show the brachial membrane and a portion of the spiral extremities of the arms.) FIG.
(For details the reader is referred to Watase (11) and to Lankester and Bourne (5).) The structure of the central eyes of Scorpio and spiders and also of Limulus differs essentially from that of the lateral eyes in having two layers of cells (hence called diplostichous) beneath the lens, separated from one another by a membrane (figs.
24, B), though these are not separated by a membrane.
3 and 4) the entosternite has tough membrane - like outgrowths or genital somite.
A movable membranous j oint between the prosoma and the opisthosoma, the generative aperture opening upon the ventral side of the membrane.
It is a colourless liquid, with a very pungent smell, and attacks the mucous membrane very rapidly.
The parasites, which cling to the intestinal mucous membrane, draw their nourishment from the blood-vessels of their host, and as they are found in hundreds in the body after death, the disorders of digestion, the increasing anaemia and the consequent dropsies and other cachectic symptoms are easily explained.
varies in shape, but is usually round or oval, and is sharply defined by a nuclear membrane from the cytoplasm in which it lies.
The daughter nuclei may have arrived at the anaphase stage, and have even gone the length of forming a nuclear membrane, without an equatorial depression having shown itself in the cell-body.
The free fatty acid radicle then unites with an alkali, and becomes transformed into a soluble soap which is then readily absorbed in this fluid condition by the epithelial cells of the mucous membrane.
The body, or " strobila," consists of a usually minute organ of attachment (scolex or its representative) which is imbedded in the intestinal membrane, and of a series of segments that arise from the base of the scolex and increase in size distally.
9, C), while in the Ctenostomata it is guarded by a delicate membrane similar to a piece of paper rolled into a longitudinally creased cylinder.
The evolution of the arrangements for protruding the polypide seems to have proceeded along several distinct lines: (i.) In certain species of Membranipora the "frontal membrane," or membranous free-wall, is protected by a series of calcareous spines, which start from its periphery and arch inwards.
t.s., Compensation-sac. f.m., Frontal membrane.
- L000clUm frontal membrane.
(iii.) In Umbonula of Cribrilina, showing the frontal membrane and parietal the entrance to the muscles of the young zooecium are like compensation - .sac on those of Membranipora, but they become the proximal side of the covered by the growth, from the proximal operculum (op).
and lateral sides, of a calcareous lamina covered externally by a soft membrane.
(iv.) In the Microporidae and Steganoporellidae the body-cavity becomes partially subdivided by a calcareous lamina ("cryptocyst," Jullien) which grows from the proximal and lateral sides in a plane parallel to the frontal membrane and not far below it.
The "epitheca" noticed above is in this case the persistent frontal membrane.
b djv, a membrane, and 7rrepov, a wing), a term used in zoological classification for one of the most important orders of the class Hexapoda.
sc, scutellum; co, cl, m, corium, clavus and membrane of forewing.
cone having a thin india-rubber membrane stretched over its narrow end.
A small metal disk was attached to the centre of the membrane and connected to earth by a fine wire.
The receiving apparatus had what we may term a personal equation, for the break of contact could only take place when the membrane travelled some finite distance, exceedingly small no doubt, from the contact-piece.
At a station more than 13 kilometres away a sort of big ear-trumpet, closed by a membrane, was placed with the membrane under water, the tube rising above the surface.
Scott (Comptes rendus, 1861, 53, p. 108) any sound whatever may be made to record its trace on the paper by means of a large parabolic cavity resembling a speaking-trumpet, which is freely open at the wider extremity, but is closed at the other end by a thin stretched membrane.
To the centre of this membrane is attached a small feather-fibre, which, when the reflector is suitably placed, touches lightly the surface of the revolving cylinder.
Any sound (such as that of the human voice) transmitting its rays into the reflector, and communicating vibratory motion to the membrane, will cause the feather to trace a sinuous line on the paper.
from a pinhole burner, fed through a cavity C, one side of which is closed by a membrane m; on the other side of the membrane is another cavity C', which is put into connexion with a source of sound, as, for instance, a Helmholtz resonator excited by a fork of the same frequency.
The membrane vibrates, and alternately checks and increases the gas supply, and the flame jumps up and down with the frequency of the source.
When the wire was heated by an electric current a fine line of vapour descended from each drop. The pipe was closed at the centre by a membrane which prevented a through draught, yet permitted the vibrations, as it was at a node.
43, and having a piece of thin membrane stretched over the opening at the top C, some dry sand being strewn over the membrane, is so placed over a circular or rectangular vibrating plate that the ends A, B lie over the segments of the plate, such as AOD, COB in the previous figure, which are in the same state of motion.
This resulted in an inflammation of the upper membrane of the brain, delirium and death.
von Nageli's investigations on molecular structure and the growth of the cell membrane we recognize the origin of modern methods of the study of cellstructure included under cytology.
After middle life he suffered from the stone, not to mention the common plague of studious men, an irritable mucous membrane.
Though ammonium chloride has certain irritant properties which may disorder the stomach, yet if its mucous membrane be depressed and atonic the drug may improve its condition, and it has been used with success in gastric and intestinal catarrhs of a subacute type and is given in doses of io grains half an hour before meals in painful dyspepsia due to hyperacidity.
But these are only surmises, based upon the fact that in various dry caves limbs still surrounded by the mummified flesh and skin, feathers, and even eggs with the inner membrane, have been found.
They are said to diminish the secretion of the bronchial mucous membrane.
In 1764 Leonhard Euler employed the functions of both zero and integral orders in an analysis into the vibrations of a stretched membrane; an investigation which has been considerably developed by Lord Rayleigh, who has also shown (1878) that Bessel's functions are particular cases of Laplace's functions.
The stomach is generally large; its wall consists of a layer of very large ciliated cells, which often contain fat globules and yellowish-green or brown particles, and outside these a connective tissue membrane; muscular fibrillae have also been described.
TRYPANOSOMES, Or Haemoflagellates, minute Protozoan parasites, characterized by the possession of one or two flagella and an undulating membrane, and specially adapted for life in the blood of a vertebrate.'
H If the flagellar border splits, the membrane doubtless divides also; but where the flagellum is a new formation the membrane will be too.
E - H shows the formation of the myonemes and the flagellar border (flagellum) of the undulating membrane, by means of a greatly elongated nuclear-spindle.
- Haemoflagellates derived from a uniflagellate, Herpetomonadine form, in which the point of insertion of the single (anterior) flagellum into the body has travelled backwards from the anterior end for a greater or less distance, the flagellum itself having become, concurrently, attached to the body for a portion of its length by means of an undulating membrane.
- Flagellates, in the great majority of instances haemal parasites, derived from a biflagellate, Bodo-like type, in which the posteriorly-directed (trailing) flagellum is always present and attached to the body by an undulating membrane, of which it constitutes the thickened edge.
The point of insertion of the attached (posterior) flagellum into the body, and, consequently, the commencement of the undulating membrane may be almost anywhere in the anterior half of the body, but is usually near the extremity.
The body is probably not limited by any distinct membrane.
Since then many other workers have obtained similar stages [see Leishman and Statham (38), Christophers (7)]; but however slender and Trypanosomelike the flagelliform parasites may appear, up till now no indications of an undulating membrane have been seen, and the kinetonuclear element is never far from the insertion of the flagellum.
Its continued employment may, indeed, so injure the mucous membrane of the stomach as to interfere with digestion and so cause a morbid and dangerous reduction in weight.
In size they may be compared with cats; the long slender limbs are connected by a broad fold of skin extending outwards from the sides of the neck and body, the fingers and toes are webbed, and the hind-limbs joined by an outer membrane as in bats.
These filaments are so fine and are set so closely together that they appear to form a continuous membrane until examined with a lens.
i,j, k,g Are placed on or near the membrane which attaches the axis of the ctenidium to the side of the body.
m, Membrane suspending the gill and attached to the body along the line x, y, z, w.
The canal of the cervix is about an inch long, and is spindle-shaped when looked at from in front; its anterior and posterior walls are in contact, and its lining mucous membrane is raised into a pattern which, from its likeness to a cypress twig, is called the arbor vitae.
The vagina is a dilatable muscular passage, lined with mucous membrane, which leads from the uterus to the external generative organs; its direction is, from the uterus, downward and forward, and its anterior and posterior walls are in contact, so that in a horizontal section it appears as a transverse slit.
The mucous membrane is raised into a series of transverse folds or rugae, and between it and the muscular wall are plexuses of veins forming erectile tissue.
The labia minora are two folds of skin containing no fat, which are usually hidden by the labia majora and above enclose the clitoris, they are of a pinkish colour and look like mucous membrane.
The hymen is a fold of mucous membrane which surrounds the orifice of the vagina and is usually only seen in the virgin.
As each genital gland enlarges it remains attached to the rest of the intermediate cell mass by a constricted fold of the coelomic membrane, known as the mesorchium in the male, and the mesovarium in the female.
After forming the prepuce the skin is reflected over the .glans and here looks like mucbus membrane.
The teeth are secreted by a small number of cells at the closed end of the caecum, the basal membrane by a transverse row of cells in front of these.
The most remarkable feature of the genus is, however, the extraordinary development of the zygomatic arches of the skull, which are enormously expanded vertically, forming great convex bony capsules on the sides of the face, enclosing on each side a large cavity lined with mucous membrane internally, and communicating by a small opening with the mouth.
The yolk prepared by the latter is conducted by one or more specialized ducts to the oviduct and the point of union is distinguished by the opening of a " shell-gland " which secretes a membrane around the conjoined mass of ovum and yolk.
The skin consists of a transparent cuticle excreted by the underlying ectoderm, the cells of which though usually one-layered may be heaped up into several layers in the head; beneath this is a basement membrane, and then a layer of longitudinal muscle fibres which are limited inside by a layer of peritoneal cells.
About 1850 Thomas Graham published his famous experiments on diffusion, both with and without a separating membrane.
Pfeffer, made known the phenomena of the osmotic pressure which is set up by the passage of solvent through a membrane impermeable to the dissolved substance or solute.
The conception of a semi-permeable membrane, permeable to the solvent only, was used by van't Hoff as a means of applying the principles of thermodynamics to the theory of solution.
It was found, too, when water was placed on one side of such a membrane, and a sugar solution in a confined space on the other, that water entered the solution till a certain pressure was set up when equilibrium resulted.
By evaporation and condensation, then, the solvent can pass through this perforated partition, which thus acts as a perfect semi-permeable membrane.
They merely show that, in the conditions of the particular experiments, the thermodynamic equilibrium value of the osmotic pressure cannot be reached - the thermodynamic or theoretical osmotic pressure (which must be independent of the nature of the membrane provided it is truly semi-permeable) is a different thing from the equilibrium pressure actually reached in a given experiment, which measures the balance of ingress and egress of solvent through an imperfect semi-permeable membrane.
The osmotic pressure (defined as the difference in the hydrostatic pressures of the solution and solvent when their vapour pressures are equal and they are consequently in equilibrium through a perfect semi-permeable membrane) may also depend on the absolute values of the hydrostatic pressures, as may the vapour pressure of the liquids.
From this equation the osmotic pressure Po required to keep a solution in equilibrium as regards its vapour and through a semi-permeable membrane with its solvent, when that solvent is under its own vapour pressure, may be calculated from the results of observations on vapour pressure of solvent and solution at ordinary low hydrostatic pressures.
The first to make systematic experiments on the free diffusion of dissolved substances with no separating membrane was Thomas Graham (1804-1869), who immersed in a large volume of water a wide-mouthed bottle containing a solution, and after some time measured the quantity of substance which had diffused into the water.
These spines are sharp and connected by a black membrane which projects, when the fish is disturbed, as a danger singal, it is believed, above the surface of the sand in which the fishes lie hid awaiting prey.
Calcium oxalate is a very common substance, especially in crustaceous lichens; fatty oil in the form of drops or as an infiltration in the membrane is also common; it sometimes occurs in special cells and in extreme cases may represent 90% of the dry substance as in Verrucaria calciseda, Biatora immersa.
Marshall Ward showed that the hyphae of Botrytis pierce the cell-walls of a lily by secreting a cytase and dissolving a hole through the membrane.
If a thin cellulose membrane is interposed between the lamellae, the hyphae nevertheless turn chemotropically from the one lamella to the other and pierce the cellulose membrane in the process.
If the membrane is of some impermeable substance, like gold leaf, the hyphae cannot dissolve its way through, but the tip finds the most minute pore and traverses the barrier by means of it, as it does a stoma on a leaf, We may hence conclude that a parasitic hyphae pierces some plants or their stomata and refuses to enter others, because in the former case there are chemotropically attractive substances present which are absent from the latter, or are there replaced by repellent poisonous or protective substances such as enzymes or antitoxins.
sur la membrane des mucorinees," Journ.
It diffuses very rapidly through a porous membrane, and through some metals at a red heat (T.
The power of hearing is acute, and so is the sight, the eyes being protected by upper and lower lids and by a nictitating membrane.
Wager speaks with greater reserve, acknowledging, however, the central body to be a nucleus of a rudimentary type, but devoid of nuclear membrane and nucleolus.
Protoplasmic continuity has been observed in the delicate membrane closing the pit.
There is, however, considerable variation in the nature of the membrane in different species; thus the cell-wall of Oedogonium, treated with sulphuric acid and iodine, turns a bright blue, while the colour is very faint in the case of Spirogyra, the wall of which is said to consist for the most part of pectose.
For this reason it is used to remove corneal opacities, deafness due to thickening of the membrane, stricture of the oesophagus and hypertrophy of the pylorus, it has also been successful in the treatment of adhesive parametritis.
The hippuric acid in the urine acts as a stimulant and disinfectant to the urinary mucous membrane.
Benzoic acid is also excreted by the bronchi and tends to disinfect and stimulate the bronchial mucous membrane.
It has the same moderately long, plump body, with a low dorsal crest, the continuation of the membrane bordering the strongly compressed tail; a large thick head with small eyes without lids and with a large pendent upper lip; two pairs of well-developed limbs, with free digits; and above all, as the most characteristic feature, three large appendages on each side of the back of the head, fringed with filaments which, in their fullest development, remind one of black ostrich feathers.
The vapourmolecules of the solvent are free to pass through the semi-permeable membrane, and will continue to condense in the solution until the hydrostatic pressure is so raised as to produce equality of vapour-pressure.
The perforated pharyngeal region has then been detached from the adherent epipleura or opercular folds (wall of atrial or branchial chamber) by cutting the fluted pharyngo-pleural membrane d, and separated by a vertical cut from the intestinal region.
These are suspended to the muscular bodywall by a double membrane, called the ligamentum denticulatum, which forms at once the roof of the atrial chamber and the floor of a persistent portion of the original body-cavity or coelom (the dorsal coelomic canal on each side of the pharynx).
While still within the egg-membrane the epiblastic cells become flagellated, and the gastrula rotates within the membrane.
About the eighth hour after commencement of development the membrane ruptures and the oval embryo escapes, swimming by means of its flagella at the surface of the sea for another twenty-four hours, during which the principal organs are laid down, although the mouth does not open until the close of this period.
The membrane, or rind, becoming loose is a sign of their being sufficiently macerated.
In this process the anode solution had to be kept separate from the cathode solution, and the membrane which had in consequence to be used, was liable to become torn, and so to cause trouble by permitting the two solutions to mix.
In medicine copper sulphate was employed as an emetic, but its employment for this purpose is now very rare, as it is exceedingly depressant, and if it fails to act, may seriously damage the gastric mucous membrane.
Where there has been local mischief due to inflammation the dead leucocytes must be removed, and this is done either by their being converted into pus in one mass, and making their way through the tissues to the nearest surface, whether of skin or mucous membrane, from which it can be discharged, or they may undergo a process of fatty degeneration and absorption, leaving behind in some cases cheesy matter, in others hard connective tissue.
Poisons formed by microbes are partly eliminated by the kidneys, partly by the mucous membrane of the stomach and intestines, and possibly also by the skin.
Thus carbolic acid or carbolized ammonia are sniffed into the nose to destroy the microbes there, or the nose is washed out by an antiseptic solution as a nasal douche; bismuth or morphine are insufflated, or zinc ointment is applied, to cover the mucous membrane, and protect it from further irritation; and various antiseptic gargles, paints and powders applied to the pharynx in order to prevent the microbic inflammation from extending to the pharynx and down the trachea and bronchi, for many a severe bronchitis begins first by sneezing and nasal irritation.
In the same way, the reflex act of coughing is useful in removing either foreign bodies or excessive secretion from the air passages; but when the mucous membrane of the respiratory tract is irritated and inflamed, it produces a feeling of tickling and a desire to cough sometimes very violently; yet the coughing simply tends to exhaust the patient, because there is really little or nothing to bring up. The same is the case in inflammation of the lung substance itself.
The treatment of inflammation of mucous membrane is based upon the same principles as inflammation of the skin, and there too we usually associate means (I) for removing microbes, (2) for destroying them, (3) for lessening the irritation they produce, and (4) for repairing any mischief they have done.
For inflammation of the mouth a similar combination is used as a mouth wash, in the throat as a gargle, and in the nose as a wash and sometimes as an ointment or spray, the ointment possessing the advantage of protecting the delicate nasal mucous membrane from irritation by stopping the entrance of irritant dust into the nasal cavities.
After the irritant has been removed either from the stomach or intestine, a feeling of irritation of the mucous membrane may remain, and sickness, diarrhoea or pain may continue in the stomach and intestine although the irritant is no longer present within them, just as the flow of tears and desire to rub may remain in the eye after the piece of grit which has occasioned it may have been removed.
The strength of the astringent application and the mode of its administration are varied according to the delicacy and position of the mucous membrane affected.
This latter cause is chiefly observed when the tissues are of a very unyielding character; for example, when the inflammation occurs in a bone or under a thick fibrous and unyielding membrane.
This disease depends upon the presence of a bacillus which grows rapidly at the back of the throat and in the airpassages specially of children, causing the formation of a membrane which, by plugging the windpipe, causes suffocation and death.
In cases where diarrhoea is very obstinate and lasts for weeks, sulphuric acid is sometimes more efficacious than alkalis; and in chronic colics it may be necessary to treat the mucous membrane by local application of astringent solutions.
Thus as it passes out by the bronchial mucous membrane it increases the amount of secretion and so acts as an expectorant.
In like manner we may by experiment ascertain the general fact that the surface of a liquid is in a state of tension similar to that of a membrane stretched equally in all directions, and prove that this tension depends only on the nature and temperature of the liquid and not on its form, and from this as a secondary physical principle we may deduce all the phenomena of capillary action.
This occurs as a membrane on the surface of the medium, or as irregular clumps or branched masses (sometimes several inches across) submerged in it, and consists of more or less gelatinous matrix enclosing innumerable " cocci," " bacteria," or other elements of the Schizomycete concerned.
C. Zoogloea stage of a Micrococcus, forming a close membrane on infusion - Pasteur's Mycoderma.
The membrane may be relatively thick, and even exhibit shells or strata.
5, 9 and II); in other cases the surrounding membrane of the spore swells and dissolves.
The process begins with the formation of brilliant granules (A, B); these increase, and the brilliant substance gradually balls together (C) and forms the spores (D), one in each segment, which soon acquire a membrane and ripen (E).
the separation of organic substances by filtration under high pressure through a colloid membrane, gelatine supported in the pores of a porcelain filter being usually employed.
In the case of diphtheria Sidney Martin obtained toxic albumoses in the spleen, which he considered were due to the digestive action of an enzyme formed by the bacillus in the membrane and absorbed into the circulation.
Thus in cholera the bacteria are practically confined to the intestine, in diphtheria to the region of the false membrane, in tetanus to some wound.
Kanthack and Cobbett, that in certain instances the toxin can be made to pass through a gelatine membrane, whereas the antitoxin cannot, its molecules being of larger size.
The wings are thus constructed on the same plan as those of a bat, but instead of four fingers, only one is elongated to bear the membrane.
In Rhamphorhynchus there is also a rhomboidal expansion of membrane at the end of the tail.
The body becomes in shape like a vase or urn attached by a narrow stalk, round which a chitinous membrane is secreted.
Three series are distinguished, podobranchiae, attached to the proximal segments of the appendages, pleurobranchiae, springing from the body-wall, and an intermediate series, arthrobranchiae, inserted on the articular membrane of the joint between the limb and the body.
Adaptations for aerial respiration are found in some of the landcrabs, where the lining membrane of the gill-chamber is beset with vascular papillae and acts as a lung.
Further, a definite cuticular membrane is frequently formed and shed at this stage, which corresponds to the nauplius-stage of larval development.
" The wing of the bat bears a considerable resemblance to that of the insect, inasmuch as it consists of a delicate, semi-transparent, continuous membrane, supported in divers directions, particularly towards its anterior margin, by a system of osseous stays or stretchers which confer upon it the degree of rigidity requisite for flight.
A membrane so constructed will, according to him, be fit for flight.
Its physiological effects are much more persistent and injurious than sulphuretted hydrogen, producing temporary paralysis of the olfactory nerves and inflammation of the mucous membrane.
This induces a reflex secretion from the salivary and gastric glands, which is followed or accompanied by increased vascularity of the gastric mucous membrane, and by some degree of activity on the part of the muscular wall of the stomach.
In the ripe seed the integument assumes the form of a fleshy envelope, succeeded internally by a hard woody shell, internal to which is a thin papery membrane - the apical portion of the nucellus - which is easily dissected out as a conical cap covering the apex of the endosperm.
Pinus) of the upper cell-layers of the seminiferous scale, which have become detached and, in some cases, adhere loosely to the seed as a thin membrane; the loose attachment may be of use to the seeds when they are blown against the branches of trees, in enabling them to fall away from the wing and drop to the ground.
The egg of the pilchard is very easily distinguished from other pelagic eggs by the unusually large space separating the vitelline membrane from the contained ovum.
Oxidizing agents, such as arsenic acid, convert it into ellagic acid, C 14 H 8 0 9 +H 2 0, probably a fluorene derivative, a substance which occurs in gall-nuts, in the external membrane of the episperm of the walnut, and prob ably in many plants, and composes the "bezoar stones" found in the intestines of Persian wild goats.
The buccal mucous membrane will be greyish, brown or black in colour, due to the corrosive effects of the acid.
The central layer is usually thick and marked by lines of growth; but in Glossograptus and Lasiograptus it is thinned down to a fine membrane stretched upon a skeleton framework of lists and fibres,.
and in Retiolites this membrane is reduced to a delicate network..
The anterior part of the palate is composed of mucous membrane tightly stretched over the flat or slightly concave bony layer which separates the mouth from the nasal passages, and is generally raised into a series of transverse ridges, which sometimes, as in ruminants, attain a considerable development.
Besides the crypts of Lieberkiihn found throughout the intestinal canal, and the glands of Brunner confined to the duodenum, there are other structures in the mucous membrane, about the nature of which there is still much uncertainty, called " solitary " and " agminated " glands, the latter more commonly known by the name of " Peyer's patches."
If iron be given in excess, or if the hydrochloric acid in the gastric juice be deficient, iron acts directly as an astringent upon the mucous membrane of the stomach wall.
The second theory is that there is no absorption of iron given by the mouth, but it acts as a local stimulant to the mucous membrane, and so improves anaemia by increasing the digestion of the food.
More usually, by an infolding of the layer of cells in development, we get three layers under the lens; the front layer is the corneagen layer, and is separated by a membrane from the other two which, more or less, fuse and contain the nerve-end-cells (retinal layer).
The matters passed from the bowels, which at first resemble those of ordinary diarrhoea, soon change their character, becoming scanty, mucous or slimy, and subsequently mixed with, or consisting wholly of, blood, along with shreds of exudation thrown off from the mucous membrane of the intestine.
In the milder forms of the disease there is simply a congested or inflamed condition of the mucous membrane, with perhaps some inflammatory exudation on its surface, which is passed off by the discharges from the bowels.
But in the more severe forms ulceration of the mucous membrane takes place.
The arsines and arsine chlorides are liquids of overpowering smell, and in some cases exert an extremely irritating action on the mucous membrane.
This effect is the same however the drug be administered, as, even after subcutaneous injection, the arsenic is excreted into the stomach after absorption, and thus sets up gastritis in its passage through the mucous membrane.
After acute poisoning, the stomach at a post-mortem presents signs of intense inflammation, parts or the whole of its mucous membrane being of a colour varying from dark red to bright vermilion and of ten corrugated.
Each consists in essence of a tightly stretched membrane or drum which is thrown into a state of rapid vibration by a powerful muscle attached to its inner surface and passing thence downwards to the floor of the thoracic cavity.
14, The podophyllous or laminar 7, Tendon of anterior extensor membrane, and of the phalanges.
15, The keratogenous membrane 8, Tendon of superficial flexor of the sole.
The lips are flexible and prehensile; and the membrane that lines them and the cheeks smooth.
Between the mucous membrane and the bone of the hard palate is a dense vascular and nervous plexus.
The membrane lining the jaws is soft and corrugated.
The upper ones are the largest, and are continuous anteriorly with the labial glands, the ducts of which open on the mucous membrane of the upper lip.
The interior is divided by the character of the lining membrane into two distinct portions, right and left.
Over the right part the mucous membrane has a greyish-red colour and a velvety appearance, and contains numerous peptic glands, which are wanting in the cardiac portion.
The small intestine is of great length (80 to 90 ft.), its mucous membrane being covered with numerous fine villi.
It is lined by mucous membrane continuous with that of the nasal passage; its use is not apparent.
The eye is provided with a nictitating membrane or third eyelid, at the base of which open the ducts of the Harderian gland.
of this are formed of epithelial cells, bounded towards the lumen of the pit by a very delicate cuticular membrane continuous with the cuticle covering the surface of the body.
In all the Australasian species the egg is large and heavily charged with foodyolk, and is surrounded by a tough membrane.
In the Cape species the eggs are smaller, though still of considerable size; the yolk is much less developed, and the egg membrane is thinner though dense.
Ova large, with much yolk and thick membrane, like those of Australasian species; embryos with slit-like blastopore and of very different ages in the same uterus, probably born all the year round.
In Narcissus the appendages are united to form a crown, consisting of a membrane similar to that which unites the stamens in Pancratium.
In Scrophularia the fifth stamen appears in the form of a scale; and in many Pentstemons it is reduced to a filament with hairs or a shrivelled membrane at the apex.
Occasionally the membrane of the mother-cell is not completely absorbed, and traces of it are detected in a viscid matter surrounding the pollen-grains, as in Onagraceae.
The extine is a firm membrane, which defines the figure of the pollen-grain, and gives colour to it.
The surface of the pollen-grain is either uniform and homogeneous, or it is marked by folds formed by thinnings of the membrane.
There are also rounded portions of the membrane or pores visible in the pollengrain; these vary in number from one to fifty, and through one FIG.
Sometimes at the place where they exist, the outer membrane, in place of being thin and transparent, is separated in the form of a lid, thus becoming operculate, as in the passionflower and gourd.
strobili were stalked, and borne on mg, Membrane of mega the main stem, among the leaves.
mg, Membrane of functional megaspore, which is filled by the prothallus, pr.
m, Membrane of megaspore.
One of the most startling discoveries of the decade 1890-1900 was the fact that a number of forms are devoid of both gills and lungs, and breathe merely by the skin and the buccal mucose membrane (20).
In some the notochord remains for a long time exposed along the ventral surface, and, owing to the absence of cartilaginous formation around it, disappears without ever becoming invested otherwise than by a thin elastic membrane; it can be easily stripped off below the vertebrae in larval specimens on the point of metamorphosing.
Although the lungs are present in such forms as preserve the gills throughout life, it is highly remarkable that quite a number of abranchiate salamanders, belonging mostly to the subfamilies Desmognathinae and Plethodontinae, are devoid of lungs and breathe entirely by the skin and by the bucco-pharyngeal mucose membrane (20).
They therefore remain for the most part in the intestine, and as they attract and retain large quantities of water, and at the same time slightly stimulate the mucous membrane, they come to have a purgative action and form the well-known group of saline cathartics.
Those which act upon the alimentary canal: Simple bitters such as quassia wood, columbo root, taraxacum, gentian, chiretta, and many others, irritate gently the mucous membrane of the stomach and bowels, and by increasing the secretions improve the appetite and digestion.
The large number of vegetable substances used as purgatives owe their action to an irritating effect upon the mucous membrane and the neuro-muscular apparatus of the bowel, whereby the secretions and peristalsis are more or less increased, as the result of which diarrhoea ensues.
On a mucous membrane or a delicate skin it exerts an irritant action, which occurs more quickly than on a thickened epidermis, such as the scalp, and according to the strength and period of application there may result redness, a blister, or an ulcer.
When swallowed in small doses they slightly irritate the mouth and gastric mucous membrane, increasing the secretions and producing a feeling of warmth.
demulcere, soften), soothe the skin or mucous membrane.
aliquot of the sample was filtered through a 0.45 micrometer membrane filter into an autosampler vial ready for analysis.
The extensive conjunctival defect, involving one-half of the bulbar conjunctiva, was reconstructed with an amniotic membrane allograft.
This hapten can conveniently be coupled to carriers such as soluble proteins, cell membrane proteins or to membrane soluble lipid anchors.
aqua regia and then the solution obtained is pipetted onto a membrane filter.
assuretest should be correlated to the membrane's ability to remove standard micro-organisms, thereby assuring it's performance prior to use.
basement membrane is an example of extracellular matrix, the subject of the next lecture.
basilar membrane forms the floor of the triangular cochlear duct.
basilar membrane motion in response to this vowel.
Each newsletter will be centered around a topical theme and this quarter's theme is membrane biophysics.
Membrane protein biophysics, including structure, function, and folding.
breather membrane was used behind the cladding.
brine shrimp embryo also requires less energy to break through a hatching membrane than a thick outer shell.
X c is a measure of the volume of the cell membrane capacitance and an indirect measure of intracellular fluid volume.
Another extension of the lining spans from the anterior membrane to insert into the cricoid cartilage, forming the vocal cords.
Other kinases at the cytosolic surface of the plasma membrane then catalyze phosphorylation of Protein Kinase B, activating it.
Too high a concentration of calcium can kill brain cells, so these pumps in the cell membrane push the calcium out quickly.
Malaria parasite antigens exposed on the surface of the infected red blood cell membrane.
The antibiotic shows strong affinity for ergosterol in the fungal cell membrane.
cell membrane integrity.
cell membrane proteins or to membrane soluble lipid anchors.
cell membrane damage, speed the healing.. .
cell membrane sodium transport.
cell membrane dysfunction.
cell membrane stability and helps to prevent brain cell over activity.
cell membranere invaginations of muscle cell plasma membrane.
cell membranence of the cell wall membrane also plays a major part in sound absorption in PU foams.
Dr. Baguant, ENT specialist comments, " Cotton buds can cause the formation of cerumen plugs by pushing cerumen toward the tympanic membrane.
Dr. Baguant, ENT specialist comments, " Cotton buds can cause the formation of cerumen plugs by pushing cerumen plugs by pushing cerumen toward the tympanic membrane.
characterized by inflammation of the membrane lining in joints.
Each operon has some genes which encode cytoplasmic rather than membrane spanning chemoreceptors.
Regulation of bicarbonate transport across the brush border membrane of the bullfrog choroid plexus.
cleavage of these proteins precludes fusion of the vesicles with the nerve membrane, thereby preventing release of neurotransmitters into the neuromuscular junction.
The bulb consists of several small egg-shaped cloves, enclosed in a white membrane.
Human membrane cofactor protein (CD46) acts as a cellular receptor for measles virus.
compaction of this material may stretch and puncture the membrane.
To minimize condensation a breather membrane was used behind the cladding.
Binding of GABA opens an integral chloride channel, producing an increase in membrane conductance that results in inhibition of neuronal activity.
Mucous membrane graft to the upper lid tarsal conjunctiva can be useful.
The ocular surface as part of the mucosal immune system: kinetics of immune cell traffic across basement membrane of the human conjunctiva.
As well as the endothelium and underlying basement membrane, there is a small layer of loose connective tissue and some adipose tissue.
constituents of the plasma membrane.
contractile ring made of actin filaments forms beneath the cells plasma membrane.
coplanar line resonator with a membrane structure.
Transplantation of preserved human amniotic membrane for surface reconstruction in severely damaged rabbit corneas.
All cells contain cytoplasm surrounded by a plasma membrane.
cytoplasm surrounded by a plasma membrane.
cytoplasm cell membrane nucleus cell wall 7 Which structure controls what enters and leaves a cell?
Select your answer ----------------- cell wall nucleus cytoplasm cell membrane 5 Which of the following types of cell is a plant cell?
cytoplasm by a double membrane called the nuclear envelope.
damp proof membrane, ARDEX DPM, was applied to the prepared concrete base.
Tension structure design is normally carried out in three stages: A 2D membrane is grossly deformed to create the correct 3D membrane shape.
The tortoise also lacks a muscular diaphragm, having only a thin membrane to separate the lungs from the rest of the body cavity.
serial dilutions were then made from each extract, 100 ul of each dilution being applied to a membrane using a dot-blot apparatus.
dural membrane forms a vital integral part of the cranio-sacral system.
These membranes are called the meninges, the outermost membrane is called the dura mater, then the arachnoid and then the pia mater.
The tough cover includes a membrane covered earpiece which gives good volume without setting your ' phone to its maximum volume.
The stimulating electrodes cause the membrane potential to change a little.
Low temperature cells The proton exchange membrane (a.k.a. polymer electrolyte membrane) fuel cell uses a polymeric electrolyte membrane) fuel cell uses a polymeric electrolyte.
Low temperature cells The proton exchange membrane (a.k.a. polymer electrolyte membrane) fuel cell uses a polymeric electrolyte.
electrolytic dissociation of water molecules to hydrogen and oxygen with membrane separation.
We are also studying the ion channels that regulate calcium movements across the cell membrane using patch clamp electrophysiology.
elucidate the mechanism of adrenal corticosteroid action from the nucleus to the plasma membrane.
embedded in the cell membrane.
The outer membrane is continuous with the rough endoplasmic reticulum.
epithelial membrane antigen and positive for CD34.
ergosterol in the fungal cell membrane.
This causes the membrane potential to become more negative and results in muscle and nerve cells becoming less excitable.
fenestrated sieve membrane and two plugs on both side of the septum are apparent (arrow heads ).
Budding of Rous sarcoma virus and vesicular stomatitis virus from localized lipid regions in the plasma membrane of chicken embryo fibroblasts.
frictional losses in the grain of the membrane material.
fusion peptide penetrates into the plasma membrane of the target cell where it finds stabilizing hydrophobic conditions.
There are currently two main models for explaining membrane fusion.
Both receptor binding and membrane fusion processes are mediated by the Haemagglutinin virus membrane glycoprotein.
By contrast PrPc, the normal prion, is ubiquitous; a cell membrane glycoprotein found on and in all cells studied.
gradient across the membrane to generate energy rich ATP molecules.
These enzymes pump protons across the inner membrane, building up a proton gradient.
gramicidin molecules join end to end to span the membrane.
Membrane fusion by the influenza hemagglutinin: the fusion pore.
heptad repeat motifs that are common to membrane fusion proteins.
This may involve the application of damp Hessian or more usually a spray applied curing membrane.
homologues of membrane proteins.
Aeromonas salmonicida possesses two genes encoding homologues of the major outer membrane protein, OmpA.
From bacterial to human models The majority of membrane protein structures are of bacterial homologues of membrane proteins.
Many signal proteins bind via lipid anchors and/or pleckstrin homology domains to the cytosolic surface of the plasma membrane.
hyaline membrane disease.
At high hydrogen concentrations the microorganism would allow hydrogen ions to leak through the cell membrane.
The largely hydrophobic R-groups of a membrane-spanning a -helix contact the hydrophobic membrane core, while the more polar peptide backbone is buried.
impermeable, infinitely thin membrane that lets you swim in the digital world.
impermeable clay barrier or more frequently on modern sites, may also include a flexible membrane liner.
It is a progressive, systemic autoimmune disease characterized by inflammation of the membrane lining in joints.
Insulin secretion results from calcium influx across the beta-cell plasma membrane through voltage-gated calcium channels.
inositol trisphosphate (IP3) receptors on the membrane that surrounds the cell.
DWI will be issuing guidance on membrane integrity testing requirements shortly.
invaginate the host plasma membrane, from which they are separated by a matrix layer.
This membrane confuses me, because I hear that there is no fertilization membrane in Hydrozoa, to which freshwater jellyfish belongs.
keypad membrane incorporating visual and tactile markings.
Programming of parameters is easily effected by means of the membrane keypad on the front of the unit.
Abstract The nuclear lamina is a filamentous structure composed of lamins that supports the inner nuclear membrane.
ligands for these death receptors are shown, embedded in the membrane of an adjacent cell.
A membrane lipid or protein is tagged with a fluorescent dye.
Other posterior segment complications included macular edema (four) and epiretinal membrane involving the macula (two ).
malaria parasite antigens exposed on the surface of the infected red blood cell membrane.
membrane of this organelle.
In the rest of the bowel the lining is a delicate mucous membrane or mucosa.
Two carrier proteins in the inner mitochondrial membrane are required for this metabolic cycle.
Firstly, to simulate the asymmetry of the hair cell response, the motion of the basilar membrane is half wave rectified.
This generates a proton gradient across the thylakoid membrane.
Applied research From the outset we have sought to protect our basic research activity with a " permeable membrane " of applied research.
membrane proteins, there are only a few crystal structures for ion channels.
membrane lipids in the development of cardiac necrosis.
membrane vesicles need not be present at the beginning of translation.
The Center has a major program of structural and functional studies on several classes of membrane proteins, including membrane transporters and ion channels.
Cell or plasma membrane The outside wall or coating of the neuron.
The basement membrane is an example of extracellular matrix, the subject of the next lecture.
Envelope: A lipid membrane enveloping a virus particle.
The cell membrane reforms between the two groups, thus forming two new ' daughter ' cells.
membranous proteins (blue) bind the membrane or are partially buried in it.
We have used laser microsurgery to dissect single cells to gain access to the plasma membrane for patch clamp recording.
Transfer of the fatty acid moiety across the inner mitochondrial membrane involves carnitine.
All living organisms consist of cells; spherical aggregates of biological molecules surrounded by a thin membrane.
For example, your stomach is lined with a layer of mucous membrane called the stomach mucosa.
mucous membrane or broken skin.
mucous membrane of the respiratory system, causing coughing, choking and impaired lung function and exacerbating asthma symptoms.
It irritates the mucous membrane of the respiratory system, causing coughing, choking and impaired lung function and exacerbating asthma symptoms.
Nasal cleansing with Emcur The Emcur Nasal Cleansing System is a medical product for moistening and cleansing the nasal mucous membrane.
The author demonstrated a positive reaction of the oral mucous membrane to Primula on himself (Helmke 1937 ).
mucous membrane in the respiratory tract.
nautilus shell or the membrane of a bat's wing.
Axonal membrane proteins are transported in distinct carriers: a two-color video microscopy study in cultured hippocampal neurons.
Closer inspection revealed an underlying choroidal nevus and no choroidal neovascular membrane.
nitride membrane mirror which is suitable for adaptive optics.
Integral proteins of the inner nuclear membrane Approximately 12 integral membrane proteins (Fig.
nucleoprotein complex is unable to cross the membrane surrounding the nucleus.
nucleoside transporters at the parasite's plasma membrane is associated with resistance.
Biosynthesis of the lipopolysaccharide core oligosaccharides and their role in outer membrane stability.
oriented perpendicular to the membrane normal.
oscillatedamental mode is given by and with and has It corresponds to the whole membrane oscillating up and down.
osmosis membrane to case quantity discounts.
otic notch, housing the tympanic membrane, is distinctive.
oxidation of substrates initially generates NADH which is recycled to NAD by the electron transport chain (ETC) in the inner mitochondrial membrane.
papery membrane to prevent a short circuit.
It acts on specific plasma membrane receptors which share common signaling pathways to insulin.
All the controls were active comparisons, tho these included potato peelings and amniotic membrane as well as conventional treatments.
Another model has been hypothesized in which the fusion peptides insert into the viral membrane rather than the target membrane (Ref.
When it rains, water percolates through the patio and boxes beneath and is trapped by the membrane.
Bones are covered by a connective tissue membrane called the periosteum.
Nystatin however, binds to ergosterol and alters membrane permeability and hence allows leakage of intracellular contents.
permeable membrane " of applied research.
A partially permeable membrane is just one with small holes in it.
phagocytosis by macrophages, apoptotic cells often undergo plasma membrane changes that trigger the macrophage response.
Phosphatidylcholine (PtdCho) is a major membrane phospholipid, and is a precursor to two other abundant membrane.
phospholipid bilayer of the mitochondrial inner membrane.
phospholipid membrane inhibits transition to the crystalline state.
Protection of cardiac membrane phospholipid against oxidative injury by calcium antagonists.
physicochemical studies of membrane lipids (Ref.
plasma membrane of the cell.
Cells cannot function without the ability to traffick proteins, carbohydrates and fats across the external membrane, called the plasma membrane.
plasma membrane receptors which share common signaling pathways to insulin.
plasma membrane calcium pump activity in immortalized distal tubule kidney cells.
plasma membrane proton pump (H + -ATPase) and various ion channels.
plasma membrane integrins.
T tubules are invaginations of muscle cell plasma membrane.
polymer electrolyte membrane fuel cell and outlines other types of fuel cell.
pores in the cell membrane letting in the foreign DNA.
The diffusional flow test methods assess the effective porosity of a filter membrane.
In most cases, specific membrane staining as well as a weak cytoplasmic positivity of tumor cells were seen.
If however an electric field is applied it has the effect of depolarizing the membrane and thereby preventing ATP synthesis.
proof membrane, ARDEX DPM, was applied to the prepared concrete base.
These enzymes pump protons across the inner membrane, building up a protons across the inner membrane, building up a proton gradient.
The 100 N-terminal residues are found to be necessary for transport through the membrane to be effected.
resonator guitar sound is the membrane in the top of the guitar body.
Endoplasmic reticulum - a system of inner cell membranes which is continuous with the nuclear membrane.
reverse osmosis works using water pressure, water is forced through a semi permeable fabric, also known as the membrane.
roofing membrane by 2005.
The membrane around the egg also becomes very rubbery during this soaking in vinegar.
Expectant management of women with prelabour rupture of the membranes at term should not exceed 96 hours following membrane rupture.
A nerve cell contains a high concentration of potassium salt whilst the chemical composition outside the cell membrane is higher in sodium salt.
secretory vesicle that moves to the plasma membrane, where the contents can be discharged from the cell.
The brine shrimp embryo also requires less energy to break through a hatching membrane than a thick outer shell.
Splints: splints: Splints are bony enlargements on the splint bones caused by damage to the bone membrane.
striated appearance is due to the many long folds of the cell membrane.
If the template and the target belong to different families within the Membrane all-alpha superfamily, the model is judged as ' false ' .
Density of newly synthesized plasma membrane proteins in intracellular membranes.
In particular, we have studied by DFS the role of tryptophan residues in membrane protein anchoring using synthetic WALP peptides.
Infrared tympanic thermometers (ITT's) measure the frequency of infrared light emitted by the tympanic membrane.
How is this large complex then translocated across the cytoplasmic membrane?
translocation pathways across the outer membrane.
Gram negative bacteria have evolved a number of different protein translocation pathways across the outer membrane.
The DNA was blotted onto a nylon membrane and the probe to the transposon was allowed to hybridize to those fragments containing the transposon.
tryptophan residues in membrane protein anchoring using synthetic WALP peptides.
t tubules are invaginations of muscle cell plasma membrane.
The mucous membrane of the inferior turbinates may become thickened in patients with rhinitis.
tympanic membrane could rupture, causing hearing loss.
Infrared tympanic thermometers (ITT's) measure the frequency of infrared light emitted by the tympanic thermometers (ITT's) measure the frequency of infrared light emitted by the tympanic membrane.
tympanic membrane Tympanic membrane temperature accurately mirrors oesophageal temperature and is a good indicator of core and brain temperature.
vasopressin cells display phasic discharge patterning that reflects bistability in the mechanisms governing membrane excitability.
The plasma membrane envelopes the particle and buds off to form an intracellular vesicle, the phagosome.
Lysosomes - small membrane bound vesicles in the cytoplasm of cells which contain toxic enzymes.
The vacuole may then become a secretory vesicle that moves to the plasma membrane, where the contents can be discharged from the cell.
However, membrane vesicles need not be present at the beginning of translation.
virion membrane proteins bind.
viscous fluid encased in a tough, flexible membrane.
waterproofing membrane is sprayed under pressure to a thickness of approximately 2mm.