Ecdysozoans Video Lessons

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Problem: Compare the movement of nematodes (vinegar eel) with that of annelid worms (earthworm) relating these different kinds of movement to the arrangement of muscle layers in these animals. Why might peristaltic motion be considered an advancement relative to sinusoidal movement?

FREE Expert Solution

Circular muscles = allow for contraction and extension

Longitudinal muscles = allow for lateral movement

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Problem Details

Compare the movement of nematodes (vinegar eel) with that of annelid worms (earthworm) relating these different kinds of movement to the arrangement of muscle layers in these animals. Why might peristaltic motion be considered an advancement relative to sinusoidal movement?

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