Action Potentials Move Faster in Myelinated Nerve Fibers Because

Question

Action potentials move faster in myelinated nerve fibers because
A)sodium ions can leap from node to node.
B)dendrites do not need to connect directly to axons.
C)sodium ions can pass through myelin faster than they do across the plasma membrane of a neuron.
D)action potentials leap from node to node.

Accepted Answer

Action potentials move faster in myelinated nerve fibers due to saltatory conduction, where the action potentials leap from node to node (nodes of Ranvier), skipping the myelinated sections of the axon. This significantly increases the speed of neural transmission compared to continuous conduction along unmyelinated fibers.