Medial cutaneous nerve of arm
{{Not to be confused with|Medial cutaneous nerve of forearm}}{{Infobox nerve
| Name = Medial brachial cutaneous nerve
| Latin = n. cutaneus brachii medialis
| Image = Gray812and814.svg
| Caption = Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Anterior view. "Medial Brachial Cutan. T1-T2" labeled near center, in yellow.
| Image2 = Gray811and813.PNG
| Caption2 = Cutaneous nerves of right upper extremity.
| Innervates =
| BranchFrom = T1 (medial cord)
| BranchTo =
}}
The medial brachial cutaneous nerve (lesser internal cutaneous nerve; medial cutaneous nerve of arm) is a sensory branch of the medial cord of the brachial plexus derived from spinal nerves C8-T1. It provides sensory innervation to the medial arm. It descends accompanied by the basilic vein.{{Citation |last=Thomas |first=Kathryn |title=Anatomy, Shoulder and Upper Limb, Medial Brachial Cutaneous Nerve |date=2022 |url=http://www.ncbi.nlm.nih.gov/books/NBK539829/ |work=StatPearls |place=Treasure Island (FL) |publisher=StatPearls Publishing |pmid=30969651 |access-date=2023-01-13 |last2=Sajjad |first2=Hussain |last3=Bordoni |first3=Bruno}}
Anatomy
= Origin =
It is the smallest and medial-most branch of the brachial plexus, and arising from the medial cord receives its fibers from the eighth cervical and first thoracic spinal nerves.
= Course =
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.
Eponym
The term nerve of Wrisberg (after Heinrich August Wrisberg) has been used to describe this nerve.{{cite journal |author=Birmingham A |title=Nerve of Wrisberg |journal=J Anat Physiol |volume=30 |issue=Pt 1 |pages=63–9 |date=October 1895 |pmid=17232174 |pmc=1327743 }}{{cite web |url=http://education.yahoo.com/reference/gray/subjects/subject/210#p937 |title=The Anterior Divisions - Gray's Anatomy of the Human Body - Yahoo! Education |access-date=2008-11-26 |archive-url=https://web.archive.org/web/20080623212253/http://education.yahoo.com/reference/gray/subjects/subject/210#p937 |archive-date=2008-06-23 |url-status=dead }}
However, the term "nerve of Wrisberg" can also refer to the nervus intermedius branch of the facial nerve.{{cite web |url=http://www.emedicine.com/ent/TOPIC8.HTM |title=eMedicine - Facial Nerve Anatomy : Article by Alpen A Patel |date=11 June 2020 }}{{cite journal |vauthors=Fortuna A, La Torre E, Forni C |title=The cisternal segment of the nevus intermedius of Wrisberg: an anatomical study under the operating microscope |journal=Acta Neurochir (Wien) |volume=27 |issue=1 |pages=53–62 |year=1972 |pmid=4540545 |doi= 10.1007/BF01402173|s2cid=7872666 }}{{cite book |author1=Masdeu, Joseph C. |author2=Brazis, Paul W. |title=Localization in clinical neurology |publisher=Lippincott Williams & Wilkins |location=Hagerstwon, MD |year=2007 |isbn=978-0-7817-9952-2 |page=288}}
See also
References
{{Gray's}}
{{Reflist}}
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
- {{SUNYAnatomyFigs|06|03|04}}
- {{EatonHand|ner|017}}
- {{KansasHandKinesiology|nerves/medialcutan.htm}}
{{Brachial plexus}}
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Category:Nerves of the upper limb
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