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Spinal Nerves: Plexus I

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Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
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Spinal Nerves: Plexus II

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The plexuses of the lower body include the lumbar, sacral, and coccygeal plexuses, which innervate the abdomen, pelvis, legs, and coccygeal region. These plexuses control the transmission of sensory information and coordinate motor functions of the lower body.
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The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...

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Related Experiment Video

Updated: Jul 10, 2026

Development of a Neonatal Rat Model for Brachial Plexus Birth Injury

Development of a Neonatal Rat Model for Brachial Plexus Birth Injury

Published on: March 27, 2026

Saturday night brachial plexus palsy.

C Marchini¹, S Zambito Marsala, E Cavagna

¹Department of Neurology, Ospedale San Martino, Viale Europa 22, I-32100, Belluno, Italy.

Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology

|November 1, 2007

Summary

An unusual case of brachial plexopathy, a nerve disorder, occurred after an alcohol binge. This condition, caused by nerve stretching, resolved spontaneously within 60 days.

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Area of Science:

Neurology
Neuroscience

Background:

Brachial plexopathy is a condition affecting the brachial plexus nerves.
Alcohol abuse can lead to various neurological complications.

Observation:

A patient presented with right hand numbness and weakness after an alcohol binge.
Neurophysiological tests indicated a brachial plexus lesion.

Findings:

Magnetic resonance imaging (MRI), cerebrospinal fluid (CSF) analysis, and DNA testing were normal.
The condition resolved spontaneously within 60 days, with normal follow-up examinations.

Implications:

This case suggests non-traumatic stretching of brachial plexus trunks can cause temporary neuropathy.
Alcohol-induced brachial plexopathy may be a self-limiting condition.