The most important function of myelin in the nervous system is to
A) form the blood-brain barrier.
B) trigger the release of neurotransmitters from axon terminals.
C) produce cerebrospinal fluid in the cerebral ventricles.
D) facilitate conduction of action potentials in axons.

Question

Quizplus · Accepted Answer

Myelin acts as an insulating layer around axons, which increases the speed at which electrical impulses (action potentials) are conducted along the nerve cells.

The Most Important Function of Myelin in the Nervous System