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What are the main functions of nerves?

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Nerves carry signals that control other physiological functions, but those are the two (motor output and sensory input) we are most conscious of. They are not simply “cables” and the information they carry is not strictly electrical - when I teach this, I emphasize the “electro-chemical” nature of the signal. read more

Nerves are bundles of axons (the long portion of nerve cells) that carry sensory information IN to the brain and motor signals OUT to the muscles; “nerves” are in the peripheral nervous system whereas whereas a bundle of axons in the CNS is juts called a pathway. read more

The peripheral nervous system consists of sensory neurons, ganglia (clusters of neurons) and nerves that connect to one another and to the central nervous system. Functionally, the nervous system has two main subdivisions: the somatic, or voluntary, component; and the autonomic, or involuntary, component. read more

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