What are nerves made up of?

i have this doctor exam i have to do
Answers:
"A nerve is a roofed, cable-like bundle of peripheral axons (the long, slender projections of neurons). A nerve provides a common pathway for the electrochemical self-assurance impulses that are transmitted along each of the axons. Nerves are found only within the peripheral nervous system. In the central on edge system, the analogous structures are known as tracts. [1][2] Neurons are sometimes called nerve cell, though this term is technically inaccurate since many neurons do not form nerves, and nerves also include non-neuronal Schwann cell that coat the axons in myelin." Source(s): http://en.wikipedia.org/wiki/Nerves

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