choanocyte


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choanocyte

(kō-ăn′ə-sīt′)
n.
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.

choanocyte

or

collar cell

a cell in which the FLAGELLUM is surrounded by a protoplasmic sheath, occurring only in sponges (Porifera) and choano flagellates.