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Inferior Subscapular Nerve (Right)
Nervous System

Inferior Subscapular Nerve (Right)

Nervus subscapularis inferior

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Quick Facts

Origin: Posterior cord of the brachial plexus.

Course: Runs inferiorly along the posterior wall of the axilla.

Branches: No named branches.

Supply: Motor innervation. Supplies the teres major and subscapularis muscles.

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Origin

The inferior subscapular nerve originates from the posterior cord of the brachial plexus. It contains fibers from spinal cord segments C5 and C6.

Course

The inferior subscapular nerve emerges from the posterior cord posterior to the second segment of the axillary artery.

It runs inferiorly, along the posterior wall of the axilla until branching at its target muscles.

Branches

Along its course, the inferior subscapular nerve does not branch. It ends by sending unnamed terminal branches to both the teres major and subscapularis muscles.

Supplied Structures

The inferior subscapular nerve is a motor nerve. It supplies two muscles in the posterior axillary region, the teres major and subscapularis muscles.

Learn more about this topic from other Elsevier products

Lower Subscapular Nerve

ScienceDirect image

The LSN is often described as the most distal branch arising directly from the posterior cord.

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