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chelology chelology
wrote...
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6 years ago
What factors increase the speed of nerve impulses in the nervous system? 
Select one:
a. presence of white and grey matters
b. presence of myelin sheaths and thickness of axons
c. length of axons and thickness of axons
d. presence of myelin sheaths and length of axons
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wrote...
Educator
6 years ago
d. presence of myelin sheaths and length of axons

I'm certain this is correct.
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