Medial cutaneous nerve of forearm
4194031
187192151
2008-01-27T05:46:10Z
Arcadian
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clean up - image, Replaced: Gray811.png → Gray811and813.PNG using [[Project:AutoWikiBrowser|AWB]]
{{Infobox Nerve |
Name = Medial cutaneous nerve of forearm |
Latin = n. cutaneus antibrachii medialis |
GraySubject = 210 |
GrayPage = 937 |
Image = Gray812and814.PNG |
Caption = Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Posterior view. ("Medial antibrach. cutan." visible in green.) |
Image2 = |
Caption2 = |
Innervates = |
BranchFrom = [[medial cord]] |
BranchTo = |
MeshName = |
MeshNumber = |
DorlandsPre = n_05 |
DorlandsSuf = 12565463 |
}}
The '''Medial Antebrachial Cutaneous Nerve''' ('''internal cutaneous nerve''', '''medial cutaneous nerve of forearm''', also sometimes misspelled "antibrachial") arises from the [[medial cord]] of the [[brachial plexus]].
It derives its fibers from the eighth cervical and first thoracic nerves, and at its commencement is placed medial to the [[axillary artery]].
It gives off, near the [[axilla]], a filament, which pierces the fascia and supplies the integument covering the [[Biceps brachii]], nearly as far as the [[Elbow-joint|elbow]].
The nerve then runs down the ulnar side of the arm medial to the [[brachial artery]], pierces the deep fascia with the [[basilic vein]], about the middle of the arm, and divides into a volar and an ulnar branch.
==Volar branch==
The ''volar branch'' (ramus volaris; anterior branch), the larger, passes usually in front of, but occasionally behind, the vena mediana cubiti ([[median basilic vein]]).
It then descends on the front of the ulnar side of the forearm, distributing filaments to the skin as far as the wrist, and communicating with the [[palmar cutaneous branch]] of the ulnar nerve.
==Ulnar branch==
The ''ulnar branch'' (ramus ulnaris; posterior branch) passes obliquely downward on the medial side of the [[basilic vein]], in front of the medial epicondyle of the [[humerus]], to the back of the [[forearm]], and descends on its ulnar side as far as the [[wrist]], distributing filaments to the [[skin]].
It communicates with the [[medial brachial cutaneous]], the [[dorsal antibrachial cutaneous]] branch of the radial, and the dorsal branch of the ulnar.
==See also==
* [[Dorsal antibrachial cutaneous nerve]]
* [[Lateral antibrachial cutaneous nerve]]
* [[Medial brachial cutaneous nerve]]
==Additional images==
<gallery>
Image:Brachial plexus.svg|Brachial plexus
Image:Gray413_color.png|Cross-section through the middle of upper arm.
Image:Gray417_color.PNG|Cross-section through the middle of the forearm.
Image:Gray525.png|The brachial artery.
Image:Gray811and813.PNG|Cutaneous nerves of right upper extremity.
</gallery>
==External links==
* {{NormanAnatomy|lesson2superficveinsupperlimb}}, {{NormanAnatomy|lesson5nervesofpostforearm}}
* {{DukeOrtho|medial_antebrachial_cutaneous_nerve}}
* {{EatonHand|ner|067}}
* {{SUNYAnatomyFigs|06|03|06}} - "Cutaneous nerves of the upper extremity."
* {{eMedicineDictionary|medial+cutaneous+nerve+of+forearm}}
* {{KansasHandKinesiology|nerves/medialcutan.htm}}
{{Gray's}}
{{Brachial plexus}}
{{neuroscience-stub}}