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Home Q & A Board Biology-Related Homework Help Cell Biology
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ff151djg ff151djg
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11 years ago
a.These axons are thinner, and there is less resistance to the voltage flow.
b.These axons use electrical synapses rather than chemical synapses.
c.The action potential can jump from node to node along the insulating myelin sheath.
d.These axons are thicker and provide less resistance to voltage flow.
e.These axons have higher depolarization values than do unmyelinated axons.
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nzegbuna.ifynzegbuna.ify
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11 years ago
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11 years ago
C.
Myelin sheaths (produced Schwann cells) are fatty layers around the axon, and fat does not conduct electricity very well. So when the action potential reaches a sheath, it has enough charge to jump down past the sheath (to a node of Ranvier which is the gap between sheaths) and continue further down the axon. These sheaths are short enough to allow the charge to jump over instead of being stopped, and long enough to make the action potential travel quicker.
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