View source for Medial cutaneous nerve of arm

{{Infobox Nerve |
  Name         = Medial cutaneous nerve of arm |
  Latin        = n. cutaneus brachii medialis  |
  GraySubject  = 210 |
  GrayPage     = 937 |
  Image        = Gray812_svg.png |
  Caption      = Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Anterior view. "Medial Brachial Cutan. T1-T2" labeled near center. |
  Image2       = |
  Caption2     = |
  Innervates   = |
  BranchFrom   = [[medial cord]] |
  BranchTo     = |
  MeshName     = |
  MeshNumber   = |
  DorlandsPre  = n_05 |
  DorlandsSuf  = 12565500 |
}}

{{SI}}
{{CMG}}



==Overview==
The '''medial brachial cutaneous nerve''' ('''lesser internal cutaneous nerve'''; '''nerve of Wrisberg''', '''medial cutaneous nerve of arm''') is distributed to the skin on the medial brachial side of the arm. 

It is the smallest branch of the [[brachial plexus]], and arising from the [[medial cord]] receives its fibers from the eighth cervical and first thoracic nerves. It passes through the [[axilla]], at first lying behind, and then medial to the [[axillary vein]], and communicates with the [[intercostobrachial nerve]]. 

It descends along the medial side of the [[brachial artery]] to the middle of the arm, where it pierces the [[deep fascia]], and is distributed to the skin of the back of the lower third of the [[arm]], extending as far as the [[Elbow-joint|elbow]], where some filaments are lost in the skin in front of the medial epicondyle, and others over the [[olecranon]]. 

It communicates with the ulnar branch of the [[medial antebrachial cutaneous nerve]].

==See also==
* [[Lateral brachial cutaneous nerve]]
* [[Posterior brachial cutaneous nerve]]

==Additional images==
<gallery>
 Image:Brachial plexus_svg.png|Brachial plexus
 Image:Gray811.png|Cutaneous nerves of right upper extremity. Anterior view.
 Image:Gray813.png|Cutaneous nerves of right upper extremity. Posterior view.
 Image:Gray814.png|Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Posterior view.
</gallery>

==External links==
* {{SUNYAnatomyFigs|06|03|04}}
* {{EatonHand|ner|017}}
* {{KansasHandKinesiology|nerves/medialcutan.htm}}

{{Gray's}}

{{Brachial plexus}}

[[Category:Nervous system]]


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