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juana.masa juana.masa
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11 years ago
Why do myelinated nerves carry impulses much faster than unmyelinated nerves?
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wrote...
11 years ago
The signal in myelinated nerves don't have to carry the signal as far in absolute distance.  The myelin sheath allows the signal to jump from one unmyelinated area to another.  So, with much less distance to travel, the signal can get to the destination faster.
wrote...
11 years ago
myelinated nerves carry impulses much faster because there are gaps in the myelin sheath called nodes of ranvier formed between myelin sheath cells along axon fibers. they enable an action potential passing down the axons to jump from node to node thus speeding impulses. Slight Smile
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