centriole

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centriole

A Dictionary of Nursing | 2008 | Â© A Dictionary of Nursing 2008, originally published by Oxford University Press 2008. (Hide copyright information) Copyright

centriole (sen-tri-ohl) 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.

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"centriole." A Dictionary of Nursing. Oxford University Press. 2008. Encyclopedia.com. 26 Dec. 2009 <http://www.encyclopedia.com>.

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centriole

A Dictionary of Plant Sciences | 1998 | | Â© A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

centriole In plants, a cylindrical organelle occurring in flagellated or ciliated cells, where it acts as a precursor to the basal body of each flagellum or cilium. Centrioles are absent from higher plants.

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MICHAEL ALLABY. "centriole." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 26 Dec. 2009 <http://www.encyclopedia.com>.

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centriole

A Dictionary of Biology | 2004 | Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

centriole A structure associated with the centrosome and found mainly in animal cells. It consists of two short cylinders, orientated at right angles to each other and composed of microtubules. When present, the centriole replicates during the nondividing phase of the cell cycle, and during the prophase of mitosis a centriole migrates with each centrosome to lie at opposite poles of the cell. It was formerly believed that the centrioles were involved in assembly of the spindle microtubules, but this role is now in doubt – they are not present in the cells of most higher plants, and their removal from cells does not affect spindle formation. See also undulipodium.

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