centriole

Tubular structures, 150 nm by 300 to 500 nm, with a wall having 9 triple microtubules, usually seen as paired organelles lying in the cytocentrum; centrioles may be multiple and numerous in some cells, such as the giant cells of bone marrow. [G. kentron, a point, center]
- anterior c. SYN: proximal c..
- distal c. the c. in the developing spermatozoon from which the flagellum develops. SYN: posterior c..
- posterior c. SYN: distal c..
- proximal c. the c. that lies in a depression in the wall of the posterior portion of the nucleus of the developing spermatozoon. SYN: anterior c..

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cen·tri·ole 'sen-trē-.ōl n one of a pair of cellular organelles that occur esp. in animals, are adjacent to the nucleus, function in the formation of the spindle apparatus during cell division, and consist of a cylinder with nine microtubules arranged peripherally in a circle

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n.
a small particle found in the cytoplasm of cells, near the nucleus. Centrioles are involved in the formation of the spindle and aster during cell division. During interphase there are usually two centrioles in the centrosome; when cell division occurs these separate and move to opposite sides of the nucleus, and the spindle is formed between them.

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cen·tri·ole (senґtre-ōl) either of the two cylindrical organelles located in the centrosome and containing nine triplets of microtubules arrayed around their edges; during cell division the centrioles are duplicated, with the resulting pairs migrating to opposite poles of the cell, where they serve to organize the spindles. They are capable of independent replication and of migrating to form basal bodies.

Medical dictionary. 2011.

Look at other dictionaries:

  • centriole — [ sɑ̃trijɔl ] n. m. • 1903; de centre ♦ Biol. Petite structure dense au milieu du centrosome, qui se dédouble avant la mitose, et dont chacune des parties forme alors le centre d un aster. ● centriole nom masculin Corpuscule central du centrosome …   Encyclopédie Universelle

  • centriole — n. (Biol.) one of two small cylindrical cell organelles composes of nine triplet microtubules, which form the asters during mitosis. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • centriole — centriole. См. центриоль. (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.

  • centriole — 1896, from Ger. centriol (1895), from Mod.L. centriolum, dim. of centrum (see CENTER (Cf. center)) …   Etymology dictionary

  • centriolė — statusas T sritis histologija, ląstelių chemija, histologinė chemija, audinių kultūra atitikmenys: lot. Centriolum ryšiai: platesnis terminas – ląstelės centras …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • centriolė — statusas T sritis histologija atitikmenys: lot. Centriolum ryšiai: platesnis terminas – ląstelės centras …   Medicininės histologijos ir embriologijos vardynas

  • centriole — [sen′trē ōl΄] n. [partial transl. of Ger zentriol < zentrum (< L centrum), CENTER + ol, dim. suffix < Fr ole < L olum] a small, dense structure in the middle of the centrosome: it doubles before mitosis, and each part forms the center …   English World dictionary

  • Centriole — Schematic of centriole showing microtubule triplets Three dimensi …   Wikipedia

  • Centriole — Détail d une coupe de cellule observée en microscopie électronique en transmission montrant un centriole. Le centriole est une structure cellulaire intrahyaloplasmique constituée de neuf triplets inclinés de microtubules, entourés par un certain… …   Wikipédia en Français

  • centriole — Organelle of animal cells that is made up of two orthogonally arranged cylinders each with nine microtubule triplets composing the wall. Almost identical to basal body of cilium. The pericentriolar material, but not the centriole itself, is the… …   Dictionary of molecular biology

  • centriole — noun Etymology: German Zentriol, from Zentrum center Date: circa 1896 one of a pair of cellular organelles that occur especially in animals, are adjacent to the nucleus, function in the formation of the spindle apparatus during cell division, and …   New Collegiate Dictionary

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