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A nerve plexus is a network of intersecting nerve fibers consisting of nerves that serve the same part of the body.
Describe nerve plexuses in the peripheral nervous system
Nerve plexuses throughout the body tend to be named after the area in which the plexus occurs and the organs, limbs, and tissues it serves. Examples include the cervical, brachial, lumbar, sacral, celiac, and coccygeal plexuses.
Auerbach's plexus, which serves the gastrointestinal tract, is named after the first person to describe this plexus, Leopold Auerbach, rather than the area of the body it serves.
The brachial plexus serves the chest, shoulders, arms and hands and is formed by the ventral rami of C5-C8-T1 spinal nerves, and lower and upper halves of C4 and T2 spinal nerves.
The brachial plexus is a network of nerve fibers, running from the spine, formed by the ventral rami of the lower four cervical and first thoracic nerve roots (C5-C8, T1). It proceeds through the neck, the axilla (armpit region), and into the arm. It is a bunch of nerves passing through the cervico-axillary canal to reach axilla and supplies the brachium, the antebrachium, and the hand.
A nerve plexus is a network of intersecting nerves; multiple nerve plexuses exist in the body.
Nerve plexuses are composed of afferent and efferent fibers that arise
from the merging of the anterior rami of spinal nerves and blood
vessels. There are five spinal nerve plexuses, except in the thoracic region, as well as other forms of autonomic plexuses, many of which are a part of the enteric nervous system.
The coccygeal plexus serves a small region over the coccyx and originates from S4, S5, and Co1 spinal nerves. It is interconnected with the lower part of sacral plexus. In addition, the celiac plexus serves the internal organs, and Auerbach's plexus serves the gastrointestinal tract.
Source: Boundless. “Plexuses.” Boundless Anatomy and Physiology. Boundless, 17 Aug. 2016. Retrieved 28 Aug. 2016 from https://www.boundless.com/physiology/textbooks/boundless-anatomy-and-physiology-textbook/peripheral-nervous-system-13/spinal-nerves-132/plexuses-712-7/