Medicine (MD/DO)
Anatomy & Embryology
Upper Extremity Nerves
Brachial Plexus Branches

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Brachial Plexus Branches

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Brachial Plexus Branches

Brachial Plexus Branches
The Brachial Plexus Branches are the nerves that directly innervate muscles.
Musculocutaneous Nerve
Muscle-and-skin Nerve

The musculocutaneous nerve innervates all flexors in the arm and the skin of the forearm.

Axillary Nerve
Ax Nerve

The axillary nerve innervates the deltoid and teres minor muscles, which laterally rotates the arm.

Radial Nerve
Radial-tire Nerve

The radial nerve innervates all extensors in the arm and forearm.

Median Nerve
Median-road Nerve

The median nerve innervates most flexors in the forearm and 5 hand muscles.

Ulnar Nerve
Underwear Nerve

The ulnar nerve innervates 1-1.5 flexors in the forearm and the remaining hand muscles.


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