A neuron is composed of dendrites, a cell body, and an axon.
The axon sends a wave of depolarization along its length, which is part of the high-speed network that sends impulses from one part of the body to another.
The wave of depolarization is primarily the movement of two positive ions (Na+ and K+) from one side of the axon’s cell membrane to the other.
The nervous system provides a high-speed communication system to and from almost every part of the body.
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