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BIOL212

Majors animal: Internal anatomy of the sea star (matching)

StructureFunction
Cardiac stomach Can be everted through the mouth to envelope prey; site of initiation of digestion
Pyloric stomach Receives secretions of digestive glands for chemical digestion
Digestive glands Secrete digestive enzymes for breakdown of food; play a major role in absorption and storage of food materials
Rectal ceca Small, branched "trees" that increase the surface area of the intestine for more efficient nutrient absorption
Gonads Produce gametes for reproduction
Ring canal Portion of water vascular system encircling the mouth
Radial canals Portions of water vascular system emanating from the ring canal and leading into each arm of the sea star
Stone canal Portion of water vascular system leading from the madreporite to the ring canal
Madreporite Porous entrance to the water vascular system that serves as both pressure regulator and simple filter
Ampullae Provide hydraulic pressure for movement of the tube feet
Ossicles of endoskeleton Support
Created by: scandalouscanine
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