MUSCULAR SYSTEM IN DIFFERENT PHYLUMS
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Nicholas Jebaily
Chordata
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Clam Worms
Clam Worms
A earthworm does not have a skeleton. It has bristles on each segment called setae that help the earthworm move. Earthworms have no limbs. The earthworm has two sets of muscles; one that makes it long and thin and one that makes it fat.