| ARC | accelerating rate calorimetry; acquired immunodeficiency syndrome-related complex; active renin conc... |
|---|---|
| ARN | acute renal necrosis; acute retinal necrosis; arcuate nucleus; Association of Rehabilitation Nurses |
| BARN | bilateral acute retinal necrosis |
| BRAO | branch retinal artery occlusion |
| BRVO | branch retinal vein occlusion |
| intestinal epithelium | <pathology> The endodermally derived epithelium of the intestine varies considerably, but the absorptive epithelium of small intestine is usually implied. The apical surfaces of these cells have microvilli possibly to increase the absorptive surface, but probably also to provide a larger surface area for enzyme activity). The lateral sub apical regions have well developed junctional complexes. (10 Jan 1998) |
|---|---|
| olfactory epithelium | The epithelium lining the nose. (18 Nov 1997) |
| enamel epithelium | The several layers of the enamel organ remaining on the enamel surface after formation of enamel is completed. Synonym: reduced enamel epithelium. (05 Mar 2000) |
| transitional epithelium | A highly distensible pseudostratified epithelium with large polyploid superficial cells that are cuboidal in the relaxed state but broad and squamous in the distended state; occurs in the kidney, ureter, and bladder. (05 Mar 2000) |
| epithelium | <pathology> The covering of internal and external surfaces of the body, including the lining of vessels and other small cavities. It consists of cells joined by small amounts of cementing substances. Epithelium is classified into types on the basis of the number of layers deep and the shape of the superficial cells. Origin: Gr. Thel = nipple (18 Nov 1997) |
| epithelium anterius corneae | The stratified squamous epithelium covering the outer surface of the cornea; it is smooth, consists usually of five layers of cells, and contains numerous free nerve endings. Synonym: epithelium anterius corneae. (05 Mar 2000) |
| epithelium, corneal | The outer epithelial layer of the cornea, consisting of stratified squamous epithelium continuous with that of the conjunctiva. (12 Dec 1998) |
| epithelium ductus saemicircularis | The simple squamous epithelium of the saemicircular ducts. Synonym: epithelium ductus saemicircularis. (05 Mar 2000) |
| epithelium lentis | The layer of cuboidal cells lying on the anterior surface of the crystalline lens inside the lens capsule. at the equator the cells elongate and give rise to the lens fibres. Synonym: epithelium lentis. (05 Mar 2000) |
| epithelium of lens | The layer of cuboidal cells lying on the anterior surface of the crystalline lens inside the lens capsule. at the equator the cells elongate and give rise to the lens fibres. Synonym: epithelium lentis. (05 Mar 2000) |
| epithelium of saemicircular duct | The simple squamous epithelium of the saemicircular ducts. Synonym: epithelium ductus saemicircularis. (05 Mar 2000) |
| junctional epithelium | A collar of epthelial cells attached to the tooth surface and subepithelial connective tissue found at the base of the gingival crevice. Synonym: epithelial attachment. (05 Mar 2000) |
| external dental epithelium | External enamel epithelium, the cuboidal cells of the outer layer of the odontogenic organ of a developing tooth. (05 Mar 2000) |
| keratinising epithelium | <cell biology> An epithelium such as vertebrate epidermis in which a keratin rich layer is formed from intracellular cytokeratins as the outermost cells die. (18 Nov 1997) |
| laminated epithelium | <pathology> An epithelium composed of multiple layers of cells, only the basal layer being in contact with the basal lamina. The basal layer is of stem cells that divide to produce the cells of the upper layers, in skin, these become heavily keratinised before dying and being shed as squames. Stratified epithelia usually have a mechanical or protective role. (18 Nov 1997) |