Sunday, April 22, 2007

Digestion


Echinoderms have a complete gut, this includes a mouth and an anus. First, the food source is ingested from the mouth, lead through the esophagus and broken down in two different stomachs. Cardiac stomach is portion of an echinoderm’s stomach that is extruded through the mouth during feeding. The pyloric stomach is connected to the digestive glands and short intestine. The cavity contains large phagocytic cells that function in the transport of food and the storage of insoluble wastes. After digestion, the feces leave through the anus.

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