Posterior cutaneous nerve of arm
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| Nerve: Posterior cutaneous nerve of arm | ||
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| Cutaneous nerves of right upper extremity. Posterior view. ("Post. brach. cutan." visible at center left.) | ||
| Latin | n. cutaneus brachii posterior | |
| Gray's | subject #210 943 | |
| From | radial nerve | |
| Dorlands/Elsevier | n_05/12565510 | |
The posterior cutaneous nerve of arm (internal cutaneous branch of musculospiral, posterior brachial cutaneous nerve) is a branch of the radial nerve that provides sensory innervation for much of the skin on the back of the arm. It arises in the axilla.
It is of small size, and passes through the axilla to the medial side of the area supplying the skin on its dorsal surface nearly as far as the olecranon.
In its course it crosses behind, and communicates with, the intercostobrachial.
[edit] See also
- Lateral brachial cutaneous nerve
- Medial brachial cutaneous nerve
- Dorsal antibrachial cutaneous nerve
[edit] Additional images
 Cross-section through the middle of upper arm. |
 Cutaneous nerves of right upper extremity. Anterior view. |
 Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Anterior view. |
 Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Posterior view. |
[edit] External links
- EatonHand ner-136
- Hand kinesiology at UK nerves/radial.htm
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 As such, some of the information contained herein may be outdated.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.
| Nerves of upper limbs (primarily): the brachial plexus |
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| supraclavicular: dorsal scapular - suprascapular - to the subclavius - long thoracic
infraclavicular: lateral cord: musculocutaneous (lateral cutaneous of forearm) - lateral pectoral - lateral head of median (anterior interosseous, palmar, common palmar digital, proper palmar digital) medial cord: medial pectoral - medial cutaneous of forearm - medial cutaneous of arm - ulnar (muscular branches, dorsal branch, palmar branch, superficial branch, deep branch) - medial head of median posterior cord: subscapular (upper, lower) - thoracodorsal - axillary (superior lateral cutaneous of arm) - radial (muscular, inferior lateral cutaneous of arm, posterior cutaneous of arm, posterior cutaneous of forearm, superficial branch, deep branch, posterior interosseous) |
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