Question

assignment: chapter 9. check yourself (practice)
questions sc4kb14h_ch09.04m

1. the fatty substance that protects the axon is called

a. axon
b. neuron
c. dendrite
d. myelin sheath

Explanation:

In the nervous - system, the myelin sheath is a fatty substance that insulates and protects the axon, facilitating the faster transmission of nerve impulses. Axon is a part of a neuron that transmits electrical impulses away from the cell body. A neuron is the basic unit of the nervous system. Dendrites receive signals from other neurons.

Answer:

d. myelin sheath