Medial cutaneous nerve of arm

Template:Infobox Nerve Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Please Take Over This Page and Apply to be Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [2] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.

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, 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

• 

  Brachial plexus

• 

  Cutaneous nerves of right upper extremity. Anterior view.

• 

  Cutaneous nerves of right upper extremity. Posterior view.

• 

  Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Posterior view.

External links

• Template:SUNYAnatomyFigs
• Template:EatonHand
• Template:KansasHandKinesiology