Epithelial cells with gravel of triple phosphates, or phosphate of lime.
The cuticle, in some species very thick, contains numerous spicules which are long, hollow and calcified; they are secreted by epithelial papillae.
With regard to sense organs the epithelial papillae of the mantle have been mentioned.
The tegmentum is pierced by numerous vertical ramified canals which contain epithelialpapillae of the epidermis.
Granulations or the epithelial lining of cholesteatomata should be removed from the recesses of the tympanic cavity with a small curette.
These growths are probably due to the soiling of the wound at the time of operation with epithelial fragments from the tumours.
The disadvantages of using a burr are, that it is less easy to control (unless the surgeon has had considerable experience in using it), and that it destroys all the epithelial lining of the auditory canal with which it comes in contact.
In this operation a considerable portion of the bony canal is denuded of its epithelial lining membrane, so that there is a special tendency to the re-formation of cicatricial tissue.
The lens capsule, which is deposited from the epithelial cells lining it, consists of a highly elastic membrane; small wounds in its continuity, therefore, gape widely.
If there be deafness of the other ear, and the functionally good ear periodically becomes deaf from obstruction of the narrow passage by cerumen or epithelial débris, and the patient is weary of conservative treatment.
In consequence the cavity may become septic, and on removal of the epithelial débris underlying ulceration may be found.
Except when the auditory canal is completely blocked by inspissated pus, cerumen, or epithelial débris, it is sufficient to mop out the ear with small pledgets of cotton-wool.
Cases have been reported in which, after traumatic rupture, or tapping, of a dermoid, the epithelial contents escaped into the belly.
If the inspissated pus or epithelial débris cannot be removed by simple syringing, an ear-bath of warm hydrogen peroxide (10 vols.
Owing to the large cavity being lined with epithelium, desquamation takes place to a greater or lesser extent, so that the wound cavity may gradually become filled with masses of epithelial débris or cerumen.
A normal lens is surrounded by a capsule, the anterior half of which is lined with a single layer of epithelial cells on its inner surface.
Lead appears to be eliminated by the skin, being taken up by the epithelial cells, and minute, insoluble particles coming away with these cells.
In the urine will be found blood and fatty epithelial casts, as well as pus.
With regard to the villi, the epithelial layer is detached, and the capillary network filled with blood and enlarged.
If examined microscopically, the liver and kidneys show no change, save a fatty degeneration and infiltration of the epithelial cells.
The epithelial lining of the ventricles of the brain and the canal of the spinal cord; endyma; ependymis.
Section through a venom gland of Latrodectus 13-guttatus showing the peritoneal, muscular andepithelial layers.
In this stage the parasite bores through the epithelial lining of the "stomach" (mid-intestine) of the mosquito and becomes encysted under the muscle layers.
Derived from epithelial cells and destined to become a part of the muscular system; -- applied to structural elements in certain embryonic forms.
Epithelial mesoderm; a layer of cuboidal epithelium cells, formed from a portion of the mesoderm during the differetiation of the germ layers.
A substance which is formed in mucous epithelial cells, and gives rise to mucin.
But in reality it proves to be rather a process of selection on the part of the epithelialcells of the intestine, analogous to the selection and rejection exercised elsewhere by unicellular organisms.
In the same way the epithelial cells of the mammary glands "select" the suitable substances from the blood.
The anaphylaxis theory of hay fever is based on the observation that the epithelial cells of the mucous membranes of the eyes, nose, and throat have not lost their primitive power of digesting foreign protein.
So, the epithelial cells of the mucous membrane of the nose and eyes, though they have no longer anything to do with digesting our food, secrete a ferment or enzyme that can split up any protein that may happen along.
The stomach was in every case empty, and I did not notice the separated epithelial coat, so generally found in other cirripedes.
Such cells, made up of epithelial and muscular components, are known as epithelio-muscular or myo-epithelial cells.
Natural selection cannot operate upon the different epithelial cells which secrete the egg-shell of Apus, since it is of no consequence to the animal which secretes the egg-shell whether a good or a bad shell is produced.
An atypical tumor is one of epithelial or connective tissue origin in which, though the cells are the same as those in the tissue from which it grows, their arrangement is quite different.
The carcinomata spring from theepithelial type of tissue while the sarcomata emanate from the connective tissue type.
Meantime the connective tissue cells have been forming fibres across the clot and epithelial cells over its surface, if skin or mucous membrane be involved in the injury.
The poison cannot enter through an intact epidermis or epithelial layer; an abrasion or solution of continuity is requisite for infection.
This explains the various trophic disturbances which are very often observed, such as epithelial growth, not only in the vicinity of the ulcer, but occasionally over the entire foot and leg; also eczema, erythema and excessive perspiration.
All the primary tumors of bone are of the connective tissue group, but various secondary tumors of epithelial origin may occur.
The old, whose epithelial structures tend to overgrowth, are more liable to hypertrophy of the nails than the young.
There are two distinct types of tissue in the body: epithelial and connective, and therefore two types of tumors: the epithelial tissue tumors and the connective tissue tumors.
Very frequently in tabes and in diabetes, a purulent blister is the first indication of trouble, but usually a marked epithelial thickening, in the form of a corn or a bunion, is the initial symptom.
Cohnheim); (3) they are epithelial cells with a latent power of unlimited proliferation which becomes active on their being dislocated from the normal association (M.
The chief varieties of cancer are Scirrhus or hard cancer, Encephaloid or soft cancer and Epithelial cancer.
Epithelial cancer is largely composed of cells resembling the natural epithelium of the body.
This process naturally removes the solid impurities as dirt, hairs, epithelial scales and cells, also some of the casein, making what is known as centrifuge slime.
The sample she sent contained a large quantity of mucus, both threads and corpuscles; with a moderate number of epithelial scales, partly anal and partly intestinal.
In atrophy the blood-vessels as well as the original connective and epithelial tissue are destroyed; while the newly formed tissue leads to hypertrophy (excessive over-growth) of other portions of the organ.
Here, as in the spinal cord, the nervous masses are grouped at first laterally and ventrally to the epithelial tube, as is seen in Fig.
In the lowest vertebrates the auditory apparatus tends more and more to resolve itself into a simple epithelial sac, the walls of which in places bear auditory hairs projecting into the sac, and in part form otoliths.
A (2), represents the relation between the nervous masses and the epithelial tube in the first instance.
The role of the nervous system as the middleman between internal and external muscular and epithelial surfaces was, I imagine, initiated from the very earliest time.
The gland-ducts are enlarged, patulous or plugged with sebaceous and epithelial matter.
Pathologically the first change noted in the epidermis is thought to be an acanthosis, followed by epithelial atrophy, and a hyperkeratosis, intercellular edema, and colloid degeneration of the prickle cells.
They appear as pin-head-sized, whitish or grayish elevations, consisting of accumulations of epithelial matter about the apertures of the hair follicles.
The sebaceous ducts or glands, or both, become blocked up with retained secretion and epithelial cells.
Retrograde esophagoscopy is sometimes useful for "stringing" the esophagus in cases in which the patient is unable to swallow a string because he is too young or because of an epithelial scaling over of the upper entrance of the stricture.
Cases of retention, epithelialand dermoid cysts have been observed; and there are isolated reports of the finding of papillomata, fibromata, lipomata, myomata and adenomata.
The epithelialingrowths hang down from the epidermis into the corium like the teeth of a comb (Mettam).
A] The plain surface of the corium has now become broken up, and what is noticed is that the broken-up appearance is due to the epithelial cells irrupting and advancing en échelon into its connective tissue.
The laminæ mostly show this branching as if a number of different growing points had arisen, each to take on a function similar to the epithelial process as it at first appeared.
Accompanying this elongation of the processes is a condensation of the epithelialcells immediately above the rete Malpighii, with a partial or total loss of their nuclei.
It shows a pronounced epithelialingrowth into the corium (Mettam).
Scaling; shedding of theepithelial elements, chiefly of the skin.
Many casts which are named hyaline, granular, epithelialand fatty.
The interstitial tissue is much increased; epithelial degeneration in the tubules extensive.
Sometimes this eczema is malignant from the beginning, being associated with the active prolifization of the epithelial cells of the milk-ducts, and with their escape into the surrounding tissues.
Unfortunately, whilst one is experimenting in the treatment of an operable cancer, the epithelial cells of the growth may be making their way towards distant parts, where no rays or emanations could possibly reach them.
The funnel-shaped membranous process above noticed is continuous with the lining membrane, consisting of an extension of the same epithelial pavement; but the cells are somewhat larger and more regular in form.
Thus the heart has contractile tissue in its muscular walls, epithelial tissue lining its cavities, and skeletal tissue forming its framework.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "epithelial" in a variety of sentences. We hope that you will now be able to make sentences using this word.
