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Related Concept Videos

Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

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.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
Spinal Nerves: Plexus II01:21

Spinal Nerves: Plexus II

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.
The Lumbar Plexus
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...
REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
Somatic Spinal Reflexes01:22

Somatic Spinal Reflexes

Somatic spinal reflexes are rapid, involuntary muscular responses to external stimuli that involve the somatic musculature and the spinal cord.
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
Arteries of the Upper Limbs01:12

Arteries of the Upper Limbs

The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
Muscles that Move the Forearm01:16

Muscles that Move the Forearm

The muscles that move the forearms can be divided into four groups: forearm flexors, forearm extensors, forearm pronators, and forearm supinators. The flexors and extensors act on the elbow joint, while the pronators and supinators act on the radioulnar joints.
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...

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Related Experiment Video

Updated: Jun 5, 2026

Development of a Neonatal Rat Model for Brachial Plexus Birth Injury
09:42

Development of a Neonatal Rat Model for Brachial Plexus Birth Injury

Published on: March 27, 2026

[Brachial plexus sleep palsy].

G Fourcade1, G Taieb, D Renard

  • 1Service des Explorations Fonctionnelles du Système Nerveux et Acupuncture, Hôpital Carémeau, CHU de Nîmes, Place du Professeur-Robert-Debré, 30029 Nîmes cedex 9, France. n.fourcade@wanadoo.fr

Revue Neurologique
|December 28, 2010
PubMed
Summary
This summary is machine-generated.

Saturday night palsy rarely affects the brachial plexus. A case study shows spontaneous recovery from numbness and weakness caused by brachial plexopathy, highlighting the need to rule out other neuropathies.

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Methods for In Vivo Biomechanical Testing on Brachial Plexus in Neonatal Piglets
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Methods for In Vivo Biomechanical Testing on Brachial Plexus in Neonatal Piglets

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Development of a Neonatal Rat Model for Brachial Plexus Birth Injury
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Methods for In Vivo Biomechanical Testing on Brachial Plexus in Neonatal Piglets
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Area of Science:

  • Neurology
  • Neurophysiology

Background:

  • Saturday night palsy, a form of radial neuropathy, typically spares the brachial plexus.
  • Brachial plexopathy is an uncommon cause of symptoms associated with transient limb paralysis during sleep.

Observation:

  • A young male presented with acute right upper limb numbness and weakness upon waking.
  • Clinical presentation suggested brachial plexopathy, confirmed by neurophysiological studies indicating proximal conduction blocks.

Findings:

  • Neurophysiological assessment revealed conduction blocks within the brachial plexus.
  • The patient demonstrated significant spontaneous clinical and neurophysiological recovery over time.

Implications:

  • Compressive brachial plexopathy diagnosis requires excluding other neuropathies presenting with conduction blocks.
  • This case underscores the importance of comprehensive diagnostic evaluation for upper limb neuropathies.