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


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


Replies:
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.

Grace Fields


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