An axon is
A) a cell that serves as the basic building block of the nervous system.
B) a layer of fatty tissue that encases the fibers of many neurons.
C) a molecule that blocks neurotransmitter receptor sites.
D) the extension of a neuron that carries messages away from the cell body.

Question

Quizplus · Accepted Answer

An axon is the long, slender projection of a neuron that carries nerve impulses away from the cell body towards other neurons or target cells. It is also known as a nerve fiber.

An Axon Is