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Name: katelyn
Status: student
Grade: 4-5
Location: VA
Country: N/A
Date: 1/3/2005

when you cut an earthworm in half, why do both parts still move?

One answer would be that an earthworm has ventral and dorsal nerve that both control motor functions. Since a worm is round, it could be that it was cut through it's side, not severing the nerves. Another explanation is that when a nerve is severed it is constantly stimulated for some time, causing the muscles to react accordingly.

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