When You Look at the Cord Coming Out of the Lamp

Multiple Choice

When you look at the cord coming out of the lamp on your desk, you will notice that there is a protective coating that surrounds and encapsulates the electricity-conducting wire inside. If you were to relate that model to the human neuron, the protective coating would refer to the

A) ​terminal buttons.
B) ​synaptic cleft.
C) ​neurotransmitters.
D) ​myelin.