As a result of this extension of the umbrellar margin, all structures belonging to this region, namely, the ring-canal, the nerve-rings, and the rim of thickened ectoderm, do not run an even course, but are thrown into festoons, caught up under the insertion of each tentacle in such a way that the ring-canal and its accompaniments form in each notch of the umbrellar margin an inverted V, the apex of which corresponds to the insertion of the tentacle; in some cases the limbs of the V may run for some distance parallel to one another, and may be fused into one, giving a figure better compared to an inverted Y.
in height until the lower parts are well thickened, when it may be allowed to acquire the allotted height by moderate annual increments.
This consists of elongated cells with cellulose walls, which are locall~ thickened along the original corners of the cells, reducing the lumer to a cylinder, so that a number of vertical pillars of cellulose con nected by comparatively thin walls form the framework of th~ tissue.
Thus the structure of an old thickened root approximates to that of an old thickened stem, and so far as the vascular tissue is concerned can often only be distinguished from the latter by the position and orientation of the primary xylems. The cambium of the primary root, together with the tissues which it forms, is always directly continuous with that of the primary stem, just in the same way as the tissues of the primary stele.
Isolated celh (idioblasts), thickened in various ways, are not uncommonly founc supporting the tissues of the leaf.
In relation to its characteristic function of protection, the epidermis, which, as above defined, consists of a single layer of cells has typically thickened and cuticularized outer walls.
- Zooecia, long and coherent, prismatic or cylindrical, with terminal orifices, their wall thin and simple in structure proximally, thickened and complicated distally.
The umbrella is shallow and has the margin supported by a rim of thickened ectoderm, as in the Trachomedusae, but not so strongly developed.
During the process the thin walls are stretched and the turns of the spiral become pulled apart without rupturing the wall of the tracheid or vessel, If the pitted type of tracheal element were similarly stretched its continuously thickened walls would resist the stretching and eventually break.
It is thickened more in some places than in others, and thus are formed the spiral, annular and other markings, as well as the pits which occur on various cells and vessels.
Besides the internal or centripetal growth, some cell-walls are thickened on the outside, such as pollen grains, oospores of Fungi, cells of Peridineae, &c. This centrifugal growth must apparently take place by the activity of protoplasm external to the cell.
As might be expected, in thickened and highly embossed valves thin spaces occur over the visual organ.
This outer wall was thickened about the IInd or IIIrd dynasty.
Along this surface stretches a groove which is surrounded by thickened cuticle and practically formed into a tube by numerous fine hairs.
In the leaf-blade this sometimes aopears as a layer of thickened subepidermal cells, tht hypoderm, often also as subepidermal bundles of sclerenchymatou~ fibres, or as similar bundles extending right across the leaf from mu epidermis to the other and thus acting as struts.
a streak of thickened ectoderm supporting the tentacle.
The beetles have feelers with eleven segments, whereof the terminal few are thickened so as to form a club.
This may be associated with mud-eating habits; but it is not wholly certain that this is the case; for in Chaetogaster and Agriodrilus, which are predaceous worms, there is no protrusible pharynx, though in the latter the oesophagus is thickened through its extent with muscular fibres.
In the neck of the proboscis the fibrous layer is greatly thickened, and other intensifications of this layer occur in the dorsal and ventral middle lines of the trunk extending to the posterior end of the body.
p, a thickened line on the walls forming the placenta; c, calyx; d, ovary; s, hooded stigma terminating the short style.
It must always be remembered that we are liable (especially in the case of fossilized integuments) to attach an unwarranted interpretation to the mere discontinuity or continuity of the thickened plates of chitinous cuticle on the back of an Arthropod.
The earliest is that of Quincke, who coated a glass grating with a chemical silver deposit, subsequently thickened with copper in an electrolytic bath.
during the latter they remain dormant beneath the ground in the form of a short thickened stem protected by the scaly remains of the bases of last season's leaves (known botanically as a.
The genus Machaeropterus, consisting of four species, is very remarkable for the extraordinary form of some of the secondary wingfeathers in the males, in which the shaft is thickened and the webs changed in shape, as described and illustrated by P. L.
The seeds or grape-stones are somewhat club-shaped, with a narrow neck-like portion beneath, which expands into a rounded and thickened portion above.
During this period the bacteria multiply and most of them assume a peculiar thickened or branched form, in which state they are spoken of as bacteroids.
ect, Thickened part of the ectoderm, which will give rise to the inner layer of the polypidebud.
The body is divided into eleven segments and the protrusible proboscis apparently into two, and the cuticle of the central segment is thickened to form three plates, one dorsal and two ventrolateral.
The feelers have one or more thickened basal segments, while the remaining segments are slender and threadlike.
The Cicadidae are for the most part large insects with ample wings; they are distinguished from other Homoptera by the front thighs being thickened and toothed beneath.
The blanks are then passed to an edge rolling machine, by which they are thickened at the edge so as to form a rim to protect the finished coin from wear.
were not only thickened but were also marked with an inscription.
- 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.
u, The thickened muscular pallial margin which adheres to the shell and forms the pallial line of the left side.
i [i]) is called the umbonal area; the great anterior muscular surface h is that of the anterior adductor muscle, the posterior similar surface i is that of the posterior adductor muscle; the long line of attachment u is the simple " pallial muscle," - a thickened ridge which is seen to run parallel to the margin of the mantle-skirt in this Lamellibranch.
The chitinous substance ch is observed to be greatly thickened as compared with what it is in fig.
In Anodonta, besides being thickened, the skeletal substance of the filament develops a specially dense, rod-like body on each side of each filament.
This opening in a uterus which has never been pregnant is a narrow transverse slit, rarely a circular aperture, but in those uteri in which pregnancy has occurred the slit is much wider and its lips are thickened and gaping and often scarred.
On the outside of the shell is a non-calcified layer of conchiolin called the periostracum, secreted by the thickened edge of the mantle.
constricted between the oesophagus and pylorus; while in the dormouse the oesophagus immediately before entering the stomach is much dilated, forming a large egg-shaped bag with thickened glandular walls; and in certain other species, as in Lophiomys and.
avellanarius, the common dormouse, distinguished by the cylindrical bushy tail, and thickened glandular walls of the cardiac extremity of the oesophagus; thirdly, Eliomys, containing several species, with tufted and doubly vaned tails, simple stomachs and smaller molar teeth, having concave crowns and faintly marked enamel-folds; and lastly, the African Graphiurus, represented by several species, with short cylindrical tails ending in a pencil of hairs, and very small molars almost without trace of enamel-folds.
Spadella P. Langerhans, with a pair of lateral fins on the tail and a thickened ectodermic ridge running back on each side from the head to the anterior end of the fin.
These were afterwards thickened and raised.
Spores usually two-celled, either with a strongly thickened cross-wall often perforated by a narrow canal or with crosswall only slightly thickened.
The so-called fir-cone potatoes, which are elongated and provided with scales at more or less regular intervals, show also very clearly that the tuber is only a thickened branch with "eyes" set in regular order, as in an ordinary shoot.
In several species of Smilax the roots become thickened here and there into large tuberous swellings 4 to 6 in.
At the apex of the rhopalium the endoderm is greatly thickened and consists of concrementcells secreting otoliths (Con).
8); the primitively open cup has now closed over to form a vesicle lying beneath the ectoderm; the outer wall of the vesicle becomes thickened to form a cellular lens (1), while the proximal wall consists of sensory and pigmented cells and forms a retina.
These teeth are connected with a framework of movably articulated ossicles developed as thickened and calcified portions of the lining cuticle of the stomach and moved by special muscles in such a way as to bring the three teeth together in the middle line.
The narrow, pointed leaves are spirally arranged and persist for four or five years; the cones are small, globose and borne at the ends of the branchlets, the scales are thickened at the extremity and divided into sharply pointed lobes, three to five seeds are borne on each scale.
In the spicate forms, with sessile spikelets on the main axis, the latter is often dilated and flattened (Paspalum), or is more or less thickened and hollowed out (Stenotaphrum, Rottboellia, Tripsacum), when the spikelets are sunk and buried within the cavities.
Further complications arise when the lower walls of the mother zooid become thickened and interpenetrated with solenia, from which buds are developed, so that lobose, tufted, or branched colonies are formed.The chief orders of the Synalcyonacea are founded upon the different architectural features of colonies produced by different modes of budding.
(3) The theca or wall, which in many corals is not an independent structure, but is formed by the conjoined thickened peripheral ends of the septa.
The trabeculae are united together by these thickened internodes, and the result is a fenestrated septum, which in older septa may become solid and aporose by continual deposit of calcite in the fenestrae.
We may, with Sedgwick, suppose the coelom to have originated by the enlargement and separation of pouches that pressed outwards from the archenteron into the thickened body-wall (such structures as the genital pouches of some Coelentera, not yet shut off from the rest of the cavity), and they would probably have been four in number and radially disposed about the central cavity.
Very generally the tail has distinctly the appearance of an appendage, but in some of the lower mammals, such as the thylacine among marsupials, and the aard-vark or ant-bear among the edentates, it is much thickened at the root, and passes insensibly into the body, after the fashion common among reptiles.
Its function in the hairless Cetacea is discharged by the specially modified and thickened layer of fatty tissue beneath the skin known as " blubber."
Callosities, or bare patches covered with hardened and thickened epidermis, are found on the buttocks of many apes, the breast of camels, the inner side of the limbs of Equidae, the grasping under-surface of the tail of prehensile-tailed monkeys, opossums; &c. The greater part of the skin of the onehorned Asiatic rhinoceros is immensely thickened and stiffened by an increase of the tissue of both the skin and epidermis, constituting the well-known jointed " armour-plated " hide of those animals.
In these forms the chitinous lining of the tubes is thickened by a closeset spiral ridge similar to the spiral thickening of the cellulose wall of the spiral vessels of plants.
Generally towards the end of the first year the original thin protective layer of a stem or branch is replaced by a thin layer of "cork," that is a layer of cells the living contents of which have disappeared while the walls have become thickened and toughened as the result of the formation in them of a substance known as suberin.
In his time, however, difficulties thickened.
The spine is very slightly developed; rather above the middle its edge is thickened and somewhat turned backwards, but it gradually subsides at the lower extremity without forming any acromial process.
The over-correction increases when the glass is thickened.
The basal portion of the consecutive axes may become much thickened and arranged more or less in a straight line, ns and thus collectively form an apparent or false axis or sympodium, and the inflorescence thus simulates a raceme.
In it no fruit is produced, and the pistil consists merely of sessile leaves, the limb of each being green and folded, with a narrow prolongation upwards, as if from the midrib, and ending in a thickened portion.
Still, in course of time, they absorb oxygen distinctly enough to become thickened.
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.
Its solution is not thickened by borax, and is precipitated by neutral lead acetate; and dilute sulphuric acid converts it into d-glucose.
Roll out the thickened ink with a soft rubber brayer.
Thin high cloud thickened during the morning with frontal cloud over Ireland moving into the Irish Sea.
The walls were thickened to 3.5 foot and standard Bren gun embrasures were built into the 5 front and side walls.
The diagnosis of an abnormal uterine cavity included a thickened endometrium, and/or a endometrial mass, and/or a submucosal mass.
Then drill the smaller hole through the thickened epoxy.
To serve - slice the meat and serve with the thickened gravy.
The nail is thickened and opaque, with subungual hyperkeratosis and onycholysis.
The nerves pass beneath Berry's ligament (a thickened area of fascia next to the trachea) and enter the larynx.
On examination, the eyelid margins are thickened, slightly inflamed and crusty.
Difficulty may be encountered in the thickened mesentery of patients with Crohn's disease.
peroneal muscular atrophy with thickened nerves.
The mouth of the mortar was thickened with a ring of modeling putty.
When she uses oil paint it gets thickened into the consistency of pitch or of mud spattered against a wall.
The bottle rim was again thickened with a ring of epoxy modeling putty.
thickened then remove from the heat and stir in the cheese until melted.
thickened up in the places he head bangs the most.
thickened with wheat flour or crumbled pastry.
thickened with a little cornflour if desired.
The mucous membrane of the inferior turbinates may become thickened in patients with rhinitis.
It is possible to buy over the counter products to treat verrucas, which slowly destroy the thickened skin.
In some respects intermediate between the preceding and the next genus is Dasyuroides byrnei, of Central Australia, an animal of the size of a rat, with one lower premolar less than in Phascologale, without the first hind toe, and with a somewhat thickened tail.
The inner wall of the vesicle (region of closure) is frequently thickened to form a so-called " sensecushion," apparently a ganglionic offshoot from the sub-umbral nerve - ring.
The ectodermal epithelium on the distal side of the bud becomes thickened, grows inwards, and forms a typical entocodon (fig.
The medusae of this order are characterized by the tough, rigid consistence of the umbrella, due partly to the dense nature of the mesogloea, partly to the presence of a marginal rim of chondral tissue, consisting of thickened ectoderm containing great numbers of nematocysts, and forming, as it were, a cushion-tyre supporting the edge of the umbrella.
I I.-Liotiidae, shell globular, margin of aperture thickened.
A wing is an outgrowth from the dorsal and pleural regions of the thoracic segment that bears it, and microscopic examination shows it to consist of a double layer of cuticularized skin, the two layers being in contact except where they are thickened and folded to form the firm tubular nervures, which serve as a supporting framework for the wing membrane, enclose air-tubes, and convey blood.
- The embryo begins to develop as an elongate, thickened, ventral region of the blastoderm which is known as the ventral plate or germ band.
deliciosus, and it has been observed that the wing-bones of these birds are also much thickened, no doubt in correlation with this abnormal structure.
The circulation is little interfered with, although the walls of the vessels are much thickened by the amyloid material (fig.
When, as in the case of eye bars, it is imperative that one part should differ materially in section from the rest, this part may be locally thickened or thinned, or a special part may here be welded on.
a, Cavity surrounding fin ray; a', fin ray; b, muscular tissue of myotome; c, nervecord; d, notochord; c, left aorta; f, thickened ridges of epithelium of praeoral chamber (Rader organ); g, coiled tube lying in a coelomic space on right side of praeoral hood, apparently an artery; h, cuticle of notochord; i, connective-tissue sheath of notochord; k, median ridge of skeletal canal of nerve-cord; 1, skeletal canal protecting nerve-cord; m, inter-segmental skeletal septum of myotome; n, subcutaneous skeletal connective tissue; o, ditto of metapleur (this should be relatively thicker than it is); q, subcutaneous connective tissue of ventral surface of atrial wall (not a canal, as supposed by Stieda and others); r, epiblastic epithelium; s, gonad-sac containing ova; t, pharyngeal bar in section, one of the "tongue" bars alternating with the main bars and devoid of pharyngo-pleural fold and coelom; v, atrio-coelomic funnel; w, socalled "dorsal" coelom; x, lymphatic space or canal of metapleur; y, sub-pharyngeal vascular trunk; z, blood-vessel (portal vein) on wall of hepatic caecum; aa, space of atrial or branchial chamber; bb, ventral groove of pharynx (anteriorly this takes the form of a ridge); cc, hyperbranchial groove of pharynx; dd, lumen or space of hepatic caecum; ee, narrow coelomic space surrounding hepatic caecum; $, lining cell-layer of hepatic caecum; gg, inner face of a pharyngeal bar clothed with hypoblast, the outer face covered with epiblast (represented black); hh, a main pharyngeal bar with projecting pharyngeal fold (on which the reference line rests) in section, showing coelomic space beneath the black epiblast; ii, transverse ventral muscle of epipleura; kk, raphe or plane of fusion of two down-grown epipleura; 11, space and nucleated cells on dorsal face of notochord; mm, similar space and cells on its ventral face.
The substances used to adulterate opium are grape-juice thickened with flour, fig-paste, liquorice, half-dried apricots, inferior gum tragacanth and sometimes clay or pieces of lead or other metals.
It is often, however, thickened, compressed and flattened in various ways, becoming petaloid in Canna, Marania, water-lily (fig.
The verdure had thickened and its bright green stood out sharply against the brownish strips of winter rye trodden down by the cattle, and against the pale-yellow stubble of the spring buckwheat.
The nerve roots appear thickened and clumped together and lie around the periphery of the theca interna in the lower lumbar canal.
Remove the bay leaf and serve the beef olives with the onions and thickened sauce.
Bring to the boil and cook until thickened slightly.
Continue to cook until thickened then remove from the heat and stir in the cheese until melted.
My sons skull has thickened up in the places he head bangs the most.
These sauces were usually thickened with wheat flour or crumbled pastry.
Can be thickened with a little cornflour if desired.
The gray, thickened skin makes me lean toward a thyroid problem, but this is something that has to be seen to be diagnosed.
Add enough water to cover and cook on low until thickened.
In an almost opposite mechanism to dilated cardiomyopathy, the hypertrophic condition results in heart muscle tissue that has thickened to the point of being unable to pump and function properly.
This mixture can be thinned out with more juice or thickened by adding more ice cream.
Add the rest of the ingredients and whip until thickened.
And no, grenadine syrup, which is made from thickened pomegranate syrup and typically added to alcoholic cocktails, doesn't count!
Remove from heat and stir until thickened.
Simmer the ingredients, stirring, until it has thickened into a glaze.
In a fondue pot, add contents from the skillet along with the creamy nut paste mixture; stir over low heat until mixture is thickened.
Gently simmer ingredients over medium heat; stir until chocolate pudding is thickened.
Anodizing: The UltraGold pans are all anodized, which means they have a thickened layer of aluminum oxide that creates a nonreactive, durable surface.
Having reached the soil, the tips there form curious thickened ends similar to those so frequent in wild British Brambles, and, taking root, form new plants.
The meconium of a newborn with meconium ileus is thickened and sticky, due to the presence of thickened mucus from the intestinal glands.
The thickened mucus of CF prevents easy movement out of the lungs and increases the irritation and inflammation of lung tissue.
If the opening does not close on its own, it needs to be repaired to prevent the pulmonary arteries from becoming thickened and blocked due to increased blood flow.
When this pocket of fluid is thickened, it may indicate that the infant will be born with a congenital cardiovascular defect.
They include: ventricular septal defect (abnormal passageway between the right and left ventricles), displaced aorta, narrowed pulmonary valve, thickened right ventricle wall.
Imaging tests: Ultrasound and CT scan may show thickened intestinal walls and ascitic fluid in patients with Pattern III EG, as well as the degree of involvement of the different layers.
The ends of the long bones of the arms and legs appear widened and thickened (clubbed).
Infected patients have thickened, crusty areas all over their bodies, including over the scalp.
Chronic lesions: These are characterized by thickened plaques of skin, lichenification, and fibrous papules.
This thickened mucus can be a sign of ovulation.
At the same time, an individual who consumes too much Vitamin K may be in danger of having thickened blood that could lead to heart attacks, stroke, and other vascular problems.
The white sauce base, made from milk thickened with a gluten-free roux, can easily be modified with additions of spices, cheese, or herbs to form a delicious accompaniment to fish or chicken.
When the butter and flour have cooked to a thickened paste, gradually add 1 cup of milk and beat with a wire whisk until smooth.
Add yogurt, wine and beef stock to bowl and mix thoroughly; continue to simmer sauce, stirring until thickened and heated through, about five minutes.
Cook until liquid reduced and sauce is thickened, about 10 minutes.
Back in Tokyo, the plot thickened as scientists working on a project known as "micro-oxygen" ran into harmful creatures that use the micro-oxygen as a weapon.
Eczema, a type of atopic dermatitis, is a condition that may cause rough, itchy, thickened skin.
Advanced squamous cell cancer can look like a large tumor, a sore that won't heal, or a large patch of thickened or irritated skin.
The technician will use a pumice stick or stone to rub away thickened skin on the heels.
Nails may look thickened and yellow, whitish and crumbly, or a combination of these.
Equally common on teenagers and adults, warts are actually benign skin tumors representing several different types of thickened mucous membranes.
Many times confused with corns or callouses, plantar warts are thickened and most often found on the bottom of the feet.
These are firm, thickened scars and can be itchy at times.
She joined the Germans and other backpackers in an Irish dance as the cigarette smoke thickened and the rock band grew louder.
They also undergo cutting up by numerous septa into short cells, and these often divide again in all planes, so that a pseudoparenchyma results, the walls of which may be thickened and swollen internally, or hardened and black on the exterior.
In leaves having a very firm texture, as those of Coniferae and Cycadaceae, the cells of the parenchyma immediately beneath the epidermis are very much thickened and elongated in a direction parallel to the surface of the leaf, so as to be fibre-like.
In connexion with cheese dairies pigs are largely fed on sour whey thickened with mixed meal produced from any or all of the grains or pulses, the choice depending upon the market price.
7rLru), a name given by the ancients to some of the resinous cone-bearing trees to which it is now applied, and, as limited by modern botanists, the designation of a large genus of true conifers, differing from the firs in their hard woody cone-scales being thickened at the apex, and in their slender needle - shaped leaves growing from a membranous sheath, either in pairs or from three to five together - each tuft representing an abortive branch, springing from the axil of a partially deciduous scale-leaf, the base of which remains closely adherent to the stem.
(vi.) Aspidosiphon, with 19 species, is easily distinguished by a calcareous deposit and thickened shield at the posterior end and at the base of the introvert, which is eccentric. (vii.) Cloeosiphon has a calcareous ring, made up of lozenge-shaped plates, round the base of its centric introvert.
Frequently, as in many Dicotyledons, the primary root, the original root of the seedling, persists throughout the life of the plant, forming, as often in biennials, a thickened tap-root, as in carrot, or in perennials, a much-branched root system.
long; in the earlier stages of growth it has a pyramidal form, in open glades the lower boughs often touching the ground, but in old age it acquires a wide almost cedar-like top. The light bluish-green foliage is somewhat lax, very dense in young trees; the cones are long and rather curved, with thin smooth scales a little thickened at the apex, and generally more or less covered with exuding white resin; they are about 5 or 6 in.
36 to 45, where the folded or curved lines represent the leaves, the thickened part being the midrib.
Mite-galls, or acarocecidia, are abnormal growths of the leaves of plants, produced by microscopic Acaridea of the genus Phytoptus (gall-mites), and consist of little tufts of hairs, or of thickened portions of the leaves, usually most hypertrophied on the upper surface, so that the lower is drawn up into the interior, producing a bursiform cavity.
The distance between the block and the plate is adjusted so as to be slightly less than the diameter of the blank, and the result is that the edge of the blank is thickened and its diameter reduced before it escapes from the machine.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.