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Nerve cells called motor neurons control the skeletal muscles. Each motor neuron controls several muscle cells in a group known as a motor unit. When a motor neuron receives a signal from the brain, it stimulates all of the muscles cells in its motor unit at the same time.
A typical neuron consists of a cell body (soma), dendrites, and an axon. The term neurite is used to describe either a dendrite or an axon, particularly in its undifferentiated stage.here are also other types of neurons that have consistent effects on their targets, for example excitatory motor neurons in the spinal cord that release acetylcholine, and inhibitory spinal neurons that release glycine. The distinction between excitatory and inhibitory neurotransmitters is not absolute, however.