The myelin sheath and nodes of Ranvier are important because they _____
A)protect the neuron.
B)speed neural impulses.
C)create action potential.
D)prevent refractory periods.

Question

Quizplus · Accepted Answer

The myelin sheath, and the gaps in it, called nodes of Ranvier, are important because they speed the impulse traveling down the axon so it is up to 100 times faster than in axons without myelin sheaths.

The Myelin Sheath and Nodes of Ranvier Are Important Because