Epithelial Sentence Examples
Black droplets of oil are seen in the epithelial cells lining the secreting tubules.
Belonging primarily to the epithelial layer, the muscular cells may become secondarily sub-epithelial.
The epithelial layer consists of (1) so-called " indifferent " cells secreting the perisarc or cuticle and modified to form glandular cells in places; for example, the adhesive cells in the foot.
The sub-epithelial layer consists primarily of the so-called inter stitial cells, lodged between the narrowed basal portions of the epithelial cells.
The ovaries are epithelial sacs which open into the uteri.Advertisement
Over the latter the dense white smooth epithelial lining of the oesophagus is continued, terminating abruptly by a raised crenulated border.
The muscle-fibres arise as processes from the bases of the epithelial cells; such cells may individually become sub-epithelial in position, as in the polyp; or, in places where muscular tissue is greatly developed, as in the velum or sub-umbrella, the entire muscular epithelium may be thrown into folds in order to increase its surface, so that a deeper sub-epithelial muscular layer becomes separated completely from a more superficial bodyepithelium.
The sensory cells are slender epithelial cells, often with a cilium or stiff protoplasmic process, and should perhaps be regarded as the only ectoderm-cells which retain the primitive ciliation of the larval ectoderm, otherwise lost in all Hydrozoa.
A characteristic feature of cancer is the carrying of the epithelial cells (which are the essential element of the growth) to the nearest lymphatic glands, and in cancer of the stomach the secondary implication of the glands may cause the formation of large masses between the stomach and the liver, which may press upon the large veins and give rise to dropsy.
The same inter-communication prevails between adjacent cells in some animal tissues, and more particularly in those which are pathological, as in the case of the epithelial cells of cancer.Advertisement
The epithelial cells are then able to pass from their normal position, in consequence of which they proliferate and at the same time revert to a more primitive type of cell.
Not only is this true of epithelial cells, but - the connective tissuecells of the supporting structure of cancerous growth, after repeated transplantation, may become so altered that a gradual evolution of apparently normal connective tissue into sarcomatous elements takes place, these giving rise to " mixed tumours."
The sarcomatous development may even completely outgrow the epithelial elements and so form and continue to grow as a pure sarcoma.
In the case of the squamous epithelial cancer of the anterior abdominal wall found so frequently in the natives of Kashmir, the position of the cancer is peculiar to this people, and is due to the chronic irritation following on repeated burns from using the " kangri " - a small earthenware vessel containing a charcoal fire enclosed in basket-work, and suspended round the waist, to assist in maintaining warmth in the extreme cold of the hills of Kashmir.
Serous degeneration is met with in epithelial cells in inflammatory conditions and following on burns.Advertisement
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.
Thrombosis is an accident of not dissimilar character, whereby a vessel is blocked not by a travelling particle, but by a clotting of the blood in situ, probably on the occasion of some harm to the epithelial lining of the vessel.
The epidermis has lost its connected epithelial character and its cilia, and the isolated cells have become sunk inwards retaining their S t- FIG.
The life of the parasites while in the insect is characterized by an alternation of active periods, during which multiplication goes on, with resting-periods, when the Trypanosomes become attached to the epithelial cells of the host.
Rudimentary cephalic eyes occur in the Mytilidae and in Avicula at the base of the first filament of the inner gill, each consisting of a I pigmented epithelial fossa containing a cuticular lens.Advertisement
This byssus is not homologous with that of other Lamellibranchs, but originates from a single glandular epithelial cell embedded in the tissues on the dorsal anterior side of the adductor muscle.
Deep to these is the ovarian stroma, composed of fibrous tissue, and embedded in it are numerous nests of epithelial cells, the Graafian follicles, in various stages of development.
About the fifth week of human embryonic life the tunica albuginea appears in the male, from which septa grow to divide the testis into lobules, while the epithelial cords form the seminiferous tubes, though these do not gain a lumen until just before puberty.
In the female the same growth of epithelial cords into the mesenchyme of the genital ridge takes place, but each one is Neural tube.
The tegmentum is pierced by numerous vertical ramified canals which contain epithelial papillae of the epidermis.Advertisement
The labial commissure gives off a subradular commissure which also bears two ganglia, these being in close relation to a special sense-organ called the subradular organ, an epithelial projection with nerve-endings, lying in front of the radula and probably gustatory in function.
The cuticle, in some species very thick, contains numerous spicules which are long, hollow and calcified; they are secreted by epithelial papillae.
The diseases to which the application has been hitherto confined are papillomata, lupus vulgaris, epithelial tumours, syphilitic ulcers, pigmentary naevi, angiomata, and pruritus and chronic itching of the skin; but the use of radium in therapeutics is still experimental.
We may regard it as a form of unipolar immigration in which the immigrating cells pass into the interior in a connected epithelial layer, instead of going in singly and independently.
Such cells, made up of epithelial and muscular components, are known as epithelio-muscular or myo-epithelial cells.
It is formed of pavement epithelial cells, mainly grouped in a concentric manner around the vascular papillae of the subcorneous integument, so that a section near the base of the hoof, cut transversely to the long axis of these papillae, shows a number of small circular or oval orifices, with cells arranged concentrically round them.
The areas of research are listed below Increased epithelial permeability in airways is known to be associated with the hyperactivity of the asthmatic airway.
The specialized intestinal epithelial cells are rapidly replaced by mature cells, so that immunoglobulins cannot be absorbed after 24-36 hours post-birth.
If it is a frankly invasive epithelial cancer, it is more likely to be well or moderately differentiated.
Available in both an oral and inhaled form, they stabilize eosinophils, reduce bronchial edema and mucous hypersecretion and can reverse epithelial damage.
A type of intermediate filament found in epithelial cells.
Yes, there is evidence of tissue destruction -- the thyroid follicles are small and lined by fewer epithelial cells.
Also the helper T lymphocytes induce the formation of CD8+ (cytotoxic) T lymphocytes which can directly kill the thyroid follicular epithelial cells.
They are derived from the epithelial sex cords of the developing gonads.
Non-invasive molecular imaging of epithelial cancer It is estimated that more than 85% of all cancers originate in the epithelium.
P3D is most effective in patients with epithelial mesothelioma at an early stage.
Cellular invasion can be duplicated in vitro with polarized epithelial cell monolayers, and parasites ' activated ' to acquire infectivity.
In high-grade cervical neoplasia, cells expressing the viral E7 protein can be found close to the epithelial surface.
Early ARM is when only drusen and retinal pigment epithelial changes are present.
Epithelial planar cell polarity refers to situations in which cells become polarized within the plane of an epithelium.
They noted that from 100 samples, seven had either sinuses or epithelial lined spaces.
Both SPA and ENT are tumors of secretory epithelial cells yet ENTV and JSRV appear to have different tropisms.
The young pigeons are fed by both parents with a peculiar stuff, the product of the strongly proliferating epithelial cells of the crop, which cells undergo a cheese-like fatty degeneration, and mixed with mucus, perhaps also with the proventricular juice, make up a milklike fluid.
The Fallopian tubes, like many other tubes in the body, are made chiefly of unstriped muscle, the outer layer of which is longitudinal and the inner circular; deep to this are the submucous and mucous coats, the latter being lined with ciliated epithelium '(see' Epithelial Tissues), and thrown into longitudinal pleats.
We also showed here the first direct evidence that putative SPARC receptors are present on ovarian epithelial cells.
These hormones are produced by reticular epithelial cells in the cortex.
Vitamins A and E have a synergetic relationship with the metabolism of the epithelial cells and progesterone production.
Part of our ongoing work aims to derive thymic epithelial stem/progenitor cells from ES cells in vitro.
Vitamin A is an important nutrient for the health and reproduction of epithelial tissue.
Uncornified epithelial cells are rounded with smooth edges and have a dark nucleus.
When the second stage of the cycle approaches, aka estrus, the edges of the epithelial cells become rough or cornified, and there are fewer red blood cells.
A corneal abrasion heals by the movement of neighboring epithelial cells, which slide over the wounded area, and through a cell division process called mitosis, which fill in the abraded area with new epithelial cells.
Other techniques to correct myopia include photorefractive keratectomy (PRK), radial keratomy (RK), laser epithelial keratomileusis (LASEK), intraocular lens implants and intrastromal corneal rings.
This essential vitamin helps in the formation of epithelial cells.
It also is essential for the health of your epithelial cells.
Epithelial cells cover the outer surface of your body including your scalp.
The classification into epithelial organs, connective tissues, and the more specialized muscle and nerve, was largely due to him; and he proved the presence of neuroglia in the brain and spinal cord, discovered crystalline haematoidine, and made out the structure of the umbilical cord.
It consists of two regions, an external epithelial layer and a more internal sub-epithelial layer.
The muscular tissue consists primarily of processes from the bases of the epithelial cells, processes which are contractile in nature and may be distinctly striated.
A further stage in evolution is that the muscle-cells lose their connexion with the epithelium and come to lie entirely beneath it, forming a sub-epithelial contractile layer, developed chiefly in the tentacles of the polyp. The of the evolution of the ganglioncells is probably similar; an epithelial cell develops processes of nervous nature from the base, which come into connexion with the bases of the sensory cells, with the muscular cells, and with the similar processes of other nerve-cells; next the nerve-cell loses its connexion with the outer epithelium and becomes a sub-epithelial ganglion-cell which is closely connected with the muscular layer, conveying stimuli from the sensory cells to the contractile elements.
The ectoderm furnishes the general epithelial covering of the body, and the muscular tissue, nervous system and sense-organs.
By mucoid is understood a soft gelatinous substance containing mucin, or pseudomucin, which is normally secreted by the epithelial cells of both the mucous membranes and glands.
This term is usually applied to a semi-solid substance of homogeneous and gelatinous consistence, which results partly from excretion and partly from degeneration of cellular structures, more particularly of the epithelial type.
With regard to sense organs the epithelial papillae of the mantle have been mentioned.