Professor Kendell Is Explaining How Neurons Work

Professor Kendell is explaining how neurons work. He uses the metaphor of an electrical cord to explain neuron structure. Like the wires inside the electrical cord, he says, the __________ carriesthe neuron's electrical message; like the rubber protecting the cord's wires, the neuron's __________ensures that the signal goes where it's supposed to go.

A) axon; myelin sheath
B) neurotransmitter; soma
C) dendrite; axon terminal
D) Node of Ranvier; myelin sheath