| ICF | immunodeficiency-centromeric instability-facial anomalies [syndrome]; indirect centrifugal flotation... |
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| ICNa | intracellular concentration of sodium |
| ICV | intracellular volume; intracerebroventricular |
| ICW | intensive care ward; intracellular water |
| IFV | interstitial fluid volume; intracellular fluid volume |
| secretory duct | A type of intralobular duct found in some salivary glands that modifies the secretory product; it derives its name from extensive infolding of the basal membrane. Synonym: salivary duct, secretory duct. (05 Mar 2000) |
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| secretory granule | A membrane-bound particle, usually protein, formed in the granular endoplasmic reticulum and the Golgi complex. (05 Mar 2000) |
| secretory immunoglobulin | Usually IgA but may be IgM linked to a secretory component and found in mucous secretions. (05 Mar 2000) |
| secretory immunoglobulin A | A subclass of IgA that is found primarily in secretions such as tears and colostrum. This form of IgA is protected from proteolytic degradation by the presence of a secretory component. (05 Mar 2000) |
| secretory nerve | <anatomy, nerve> A nerve conveying impulses that excite functional activity in a gland. Synonym: secretomotor nerve. (05 Mar 2000) |
| secretory otitis media | Inflammation of middle ear mucosa, often accompanied by accumulation of fluid, secondary to eustachian tube obstruction. Synonym: secretory otitis media. (05 Mar 2000) |
| secretory protein | <protein> In eukaryotes, proteins synthesised on rough endoplasmic reticulum and destined for export. Nearly all proteins secreted from cells are glycosylated (in the Golgi apparatus, although there are exceptions (albumin). In prokaryotes, secreted proteins may be synthesised on ribosomes associated with the plasma membrane or exported post translation. (18 Nov 1997) |
| secretory rate | The amount of a substance secreted by cells or by a specific organ or organism over a given period of time; usually applies to those substances which are formed by glandular tissues and are released by them into biological fluids, e.g., secretory rate of corticosteroids by the adrenal cortex, secretory rate of gastric acid by the gastric mucosa. (12 Dec 1998) |
| secretory vesicle | <cell biology> Membrane bounded vesicle derived from the Golgi apparatus and containing material that is to be released from the cell. The contents may be densely packed, often in an inactive precursor form (zymogen). (18 Nov 1997) |
| steroid secretory rate | The rate of glandular secretion of a given steroid, usually expressed as milligrams per day; does not include any amount of the steroid that might be formed extraglandularly. (05 Mar 2000) |
| IgA, secretory | The principle ig found in exocrine secretions such as milk, respiratory and intestinal mucin, saliva and tears. It is composed of two to four molecules of 7s IgA and one molecule each of j chain and secretory component (sc), also called secretory piece. Molecular weight appr. 400,000. (12 Dec 1998) |
| ampulla of lacrimal canaliculus | A slight dilation at the angle of the lacrimal canaliculus immediately beyond the lacrimal punctum. Synonym: ampulla canaliculi lacrimalis. (05 Mar 2000) |
| anterior canaliculus of chorda tympani | <anatomy> A canal in the petrotympanic or glaserian fissure, near its posterior edge, through which the chorda tympani nerve issues from the skull. Synonym: Civinini's canal, Huguier's canal, iter chordae anterius. (05 Mar 2000) |
| auricular canaliculus | The canal that extends from the jugular fossa laterally through the mastoid process. It transmits the auricular branch of the vagus. Synonym: canaliculus mastoideus, auricular canaliculus. (05 Mar 2000) |
| biliary canaliculus | One of the intercellular channels, about 1 um or less in diameter, that occurs between liver cells forming the first portion of the bile system. Synonym: bile capillary. (05 Mar 2000) |