Moving to the next question prevents changes to this answer. Question 13
The purpose of the myelin that surrounds the axon is to:
A Repair neurons within the peripheral nervous system.
B. Help electrical currents cross the synapse completely
Oc. Keep nerve cells continually active.
D. Protect, insulate, and speed the transmission of an impulse down the axon.
A Moving to the next question prevents changes to this answer,