In myelinated axons, where are the sodium ion channels concentrated?
A) at each of the nodes of Ranvier
B) near the site of neurotransmitter release
C) along the dendrites
D) wherever myelin is covering the axon

Question

Quizplus · Accepted Answer

Sodium ion channels are concentrated at each of the nodes of Ranvier in myelinated axons. This allows for the saltatory conduction of the action potential along the length of the axon, increasing the speed of nerve impulses.

In Myelinated Axons, Where Are the Sodium Ion Channels Concentrated