Keyword Analysis & Research: collar cells


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What are the functions of the collar cells?

The collar cells serve two purposes. First, they beat their flagella back and forth to force water through the sponge . The water brings in nutrients and oxygen, while it carries out waste and carbon dioxide. Second, the sticky collars of the collar cells pick up tiny bits of food brought in with the water.

What is the definition of collar cells?

Definition of collar cell. : a flagellated endodermal cell that lines the cavity of a sponge and has a contractile protoplasmic cup surrounding the flagellum — called also choanocyte.

What is another name for collar cells?

Choanocytes (also known as "collar cells") are cells that line the interior of asconoid, syconoid and leuconoid body type sponges that contain a central flagellum, or undulipodia, surrounded by a collar of microvilli which are connected by a thin membrane. They make up Choanoderm, a type of cell layer found in sponges.

What are sponges collar cells?

Sponges have several cell types: * Choanocytes (also known as "collar cells"), flagellated cells which function as the sponge's digestive system, are remarkably similar to the protistan choanoflagellates. The collars are composed of microvilli and are used to filter particles out of the water.


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