The medial brachial cutaneous nerve (lesser internal cutaneous nerve; medial cutaneous nerve of arm) is distributed to the skin on the medial brachial side of the arm.
Anatomy
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
The brachial artery is the major blood vessel of the (upper) arm. It is the continuation of the axillary artery beyond the lower margin of teres major muscle. It continues down the ventral surface of the arm until it reaches the cubital fossa ...
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
The medial cutaneous nerve of the forearm (medial antebrachial cutaneous nerve) branches from the medial cord of the brachial plexus. It contains axons from the ventral rami of the eighth cervical (C8) and first thoracic (T1) nerves.
It gives o ...
.
Eponym
The term nerve of Wrisberg (after
Heinrich August Wrisberg
Heinrich August Wrisberg (20 June 1739 – 29 March 1808) was an anatomist. He also published under the Latinized version of his name as Henricus Augustus Wrisberg.
Education
He obtained his MD in 1763 at the University of Göttingen with a thes ...
) has been used to describe this nerve.
However, the term "nerve of Wrisberg" can also refer to the
nervus intermedius branch of the
facial nerve.
See also
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Superior lateral cutaneous nerve of arm
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Inferior lateral cutaneous nerve of arm
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Posterior cutaneous nerve of arm
References
Additional images
File:Brachial plexus.svg, Brachial plexus
File:Brachial_plexus_color.svg, Brachial plexus with courses of spinal nerves shown
File:Slide3zzz.JPG, Medial brachial cutaneous nerve
File:Slide6bbbb.JPG, Medial brachial cutaneous nerve
File:Slide1hhhh.JPG, Medial brachial cutaneous nerve
File:Slide22EE.JPG, brachial cutaneous nerve
File:Slide11EEEE.JPG, brachial cutaneous nerve
File:Slide3FFF.JPG, brachial cutaneous nerve
File:Slide4KKK.JPG, Brachial cutaneous nerve
File:Slide5ZZZ.JPG, Brachial cutaneous nerve
File:Slide4WWW.JPG, Brachial cutaneous nerve
File:Slide12WWW.JPG, Brachial cutaneous nerve
File:Slide8FFFF.JPG, Brachial cutaneous nerve
File:Slide1ecc.JPG, Brachial plexus.Deep dissection.Anterolateral view
External links
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Nerves of the upper limb
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