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Related to Choanocytes: phylum Porifera


One of a layer of flagellated cells lining the body cavity of a sponge and characterized by a collar of cytoplasm surrounding the flagellum. Also called collar cell.

[Greek khoanē, funnel (from khein, to pour; see gheu- in Indo-European roots) + -cyte.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) any of the flagellated cells in sponges that maintain a flow of water through the body. A collar of protoplasm surrounds the base of the flagellum. Also called: collar cell
[C19: from Greek khoanē funnel (from khein to pour) + -cyte]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.choanocyte - any of the flagellated cells in sponges having a collar of cytoplasm around the flagellumchoanocyte - any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body
flagellated cell - any cell or one-celled organism equipped with a flagellum
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References in periodicals archive ?
"Biologists for decades believed the existing theory was a no-brainer, as sponge choanocytes look so much like single-celled choanoflagellates -- the organism considered to be the closest living relatives of the animals," she said.
A few of the inner cells retain flagella but do not resemble choanocytes in other characteristics (Fig.
Poriferans intake microorganisms through their ostia that are captured by choanocytes and digested material is expelled through their osculum (Wehrl et al.
And a patch inside one of the tubes has pits encircled by raised collars, resembling cells called choanocytes that move water through sponges.
Flat tile-like features on the fossil's external surface, punctuated with small pores, resemble pinacocytes on modern sponges, whereas the fossil's inner surface is covered with a regular pattern of uniform pits, with many pits surrounded by collars, similar to sponge choanocytes.
When he and his Pathology Department colleagues went back and looked at the samples, De Goeij realised that choanocytes were shedding all over the place.
choanocytes that squat in grove after grove like Quakers at
Mae 'na nifer o blygiadau fel arfer yn wal y corff, felly mae 'na ddigon o arwynebedd a lle i'r choanocytes yma dynnu bwyd i mewn i'r anifail.
Sollas (1884) considered sponges to be an independent group because they have a simple organization and sponge choanocytes bear a strong resemblance to choanoflagellate protozoa.
The inner zone is called the choanoderm or choanosome, comprising a chamber whose walls are formed from a single layer of flagellated cells, called choanocytes (Ch).
Their entire body is organized for filtering water, which is moved inside an aquiferous system by choanocytes," or pumping cells.
Embryogenesis and metamorphosis in a haplosclerid demosponge: gastrulation and transdifferentiation of larval ciliated cells to choanocytes. Invertebr.