secretion


secretion
secretionary /si kree"sheuh ner'ee/, adj.
/si kree"sheuhn/, n.
1. (in a cell or gland) the act or process of separating, elaborating, and releasing a substance that fulfills some function within the organism or undergoes excretion.
2. the product of this act or process.
[1640-50; < L secretion- (s. of secretio), equiv. to secret(us) (ptp. of secernere to SECERN) + -ion- -ION]

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      in biology, production and release of a useful substance by a gland or cell; also, the substance produced. In addition to the enzymes and hormones that facilitate and regulate complex biochemical processes, body tissues also secrete a variety of substances that provide lubrication and moisture. Within an individual cell the Golgi apparatus and its associated secretory granules are thought to be the structures responsible for the production and release of secretory substances.

      Most secretions are internal, but some are both external and obvious—e.g., tears and sweat. The gastric glands lining the stomach include four different types of cells that secrete substances necessary to digestion. Endocrine glands secrete hormones directly into the bloodstream to be carried to their sites of action.

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Universalium. 2010.

Look at other dictionaries:

  • sécrétion — [ sekresjɔ̃ ] n. f. • 1711; « séparation » 1495; lat. secretio « séparation, dissolution » 1 ♦ Phénomène physiologique par lequel un tissu produit une substance spécifique, qui peut soit s introduire dans le sang par osmose, soit s écouler à la… …   Encyclopédie Universelle

  • Secretion — is the process of segregating, elaborating and releasing chemicals from a cell, or a secreted chemical substance or amount of substance. In contrast to excretion, the substance may have a certain function, rather than being a waste product.In… …   Wikipedia

  • Secretion — Sécrétion Voir « sécrétion » sur le Wiktionnaire …   Wikipédia en Français

  • Secretion — Se*cre tion, n. [L. secretio: cf. F. s[ e]cr[ e]tion.] 1. The act of secreting or concealing; as, the secretion of dutiable goods. [1913 Webster] 2. (Physiol.) The act of secreting; the process by which material is separated from the blood… …   The Collaborative International Dictionary of English

  • secretion — (n.) 1640s, from Fr. sécrétion, from L. secretionem (nom. secretio) separation, noun of action from pp. stem of secernere to separate, set apart (see SECRET (Cf. secret)) …   Etymology dictionary

  • secretion — secretion. См. секреция. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Secretion — (v. lat.), Absonderung. Secretionsgebilde (Secretorĭa orgăna), so v.w. Absonderungsorgane. Secretorisch, absondernd. Secretiv, absonderungsfähig. Secretivität, Absonderungsfähigkeit …   Pierer's Universal-Lexikon

  • Secretion — (vom lat. secernere, absondern, aus scheiden), in der Physiologie die Thätigkeit, wodurch aus dem Blute fortwährend Stoffe zur Ernährung und Erneuerung des Leibes abgesondert werden; vgl. Blut …   Herders Conversations-Lexikon

  • secretion — index concealment Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • secretion — ► NOUN 1) a process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion. 2) a substance discharged in such a way. ORIGIN Latin, separation , from secernere move… …   English terms dictionary

  • secretion — [si krē′shən] n. [MFr < L secretio, separation < secretus: see SECRET] 1. the act of hiding or concealing something 2. a) a process in which a gland, tissue, etc. produces a biochemical and releases it into the organism for special use by… …   English World dictionary