Wednesday, 11 May 2016

How Peripheral nerves include both motor nerves and sensory

There are 31 pairs of spinal nerves that exit the spinal cord through openings between the vertebrae. The point at which the nerve exits the vertebrae is named the nerve root, where it branches out into many smaller nerves that control different parts of the body is named peripheral nerves.

 As an example, a nerve that exits the lower back has peripheral branches that extend down towards the toes. Peripheral nerves comprise the peripheral central nervous system.

The peripheral nerves include both motor nerves and sensory nerves:

Sensory nerves are nerves that receive sensory stimuli, including how something feels and when it is painful. They include nerve fibers, called sensory fibers (mechanoreceptor fibers sense movement and pressure placed against the body, and nociceptor fibers sense tissue injury).

Motor nerves result in the muscles and stimulate movement. They comprise nerve fibers called motor fibers.

While is has not been firmly established, it is belief that injury to any of these kinds of nerve tissue can be quite a possible cause neuropathy pain.

Negligence the nerve cell which is damaged by a neuropathy may be the axon (the interior information pathway with the nerve cell) and/or its myelin covering (the fatty outer sheath that protects the nerve cell and assists with conveying information throughout the central nervous system).

When neuropathy pain occurs by injury to the above structures, neuropathy is sustained by abnormal processing of sensory input with the peripheral nervous system along with the nervous system

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