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Posterior cutaneous nerve of forearm

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Nerve: Posterior cutaneous nerve of forearm
Gray814
Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Posterior view. ("Dors. antibrach. cutan." visible in red at center.)
Gray812
Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Anterior view. ("Dors. antibrach. cutan." visible in red at center.)
Latin n. cutaneus antebrachii posterior, n. cutaneus antibrachii dorsalis
Gray's subject #210 944
Innervates
From radial nerve
To
MeSH [1]

The dorsal antibrachial cutaneous nerve (external cutaneous branch of musculospiral, posterior antebrachial cutaneous nerve, posterior cutaneous nerve of forearm) perforates the lateral head of the Triceps brachii at its attachment to the humerus.

The upper and smaller branch of the nerve passes to the front of the elbow, lying close to the cephalic vein, and supplies the skin of the lower half of the arm.

The lower branch pierces the deep fascia below the insertion of the Deltoideus, and descends along the lateral side of the arm and elbow, and then along the back of the forearm to the wrist, supplying the skin in its course, and joining, near its termination, with the dorsal branch of the lateral antibrachial cutaneous nerve.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.



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