A fatty substance wrapped around the shaft of axons in the nervous system and whose function is to insulate neurons and speed up the neural impulse is called (a)_________.
A)synaptic vesicle
B)dendrite
C)glial cell
D)myelin

Question

Quizplus · Accepted Answer

Myelin is a fatty substance that insulates the axons of neurons and increases the speed of neural impulses. Synaptic vesicles are small sacs in the axon terminal that store neurotransmitters, dendrites are the branch-like structures that receive information from other neurons, and glial cells are support cells in the nervous system. None of these have the function of myelinating axons.

A Fatty Substance Wrapped Around the Shaft of Axons in the Nervous