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9 terms

Sea Star Body Functions

STUDY
PLAY
Echinoderm (Water Vascular System)
Sea Star
Central Disk
center, top, circle, where arms radiate,
Sieve Plate
center of central disk, poops and drinks from there
Anus
Center of sieve plate - eliminates
Mouth
bottom of sea star - where food enters
Tube Feet
on bottom, middle of arms - suction to grab food
Stomach
internal, below central disks - digestive organ
Rectal Caeca
brown feathery structure, comes out to arms, waste storage before expulsion
Hepatic Caeca
in arms, produces enzymes for food breakdown by stomach