Encyclopedia entry

Medial Brachial Cutaneous Nerve

Published on 9 August 2026Version 1

Not assessed by the portal — what this means

Abstract

This nerve may receive fibers from the eighth cervical to the second thoracic nerves. The connection with the intercostobrachial nerve may be multiple (two or more communicating branches), forming a plexus at the posterior boundry of the axillary space. The nerve sometimes communicates with the lateral cutaneous branch of the third intercostal nerve. When absent, the medial brachial cutaneous is replaced (rarely) by a lateral cutaneous branch from the first thoracic nerve, which traverses the first intercostal space, or more commonly by the intercostobrachial nerve.

This nerve may receive fibers from the eighth cervical to the second thoracic nerves.

The connection with the intercostobrachial nerve may be multiple (two or more communicating branches), forming a plexus at the posterior boundry of the axillary space.

The nerve sometimes communicates with the lateral cutaneous branch of the third intercostal nerve.

When absent, the medial brachial cutaneous is replaced (rarely) by a lateral cutaneous branch from the first thoracic nerve, which traverses the first intercostal space, or more commonly by the intercostobrachial nerve.

The medial cutaneous nerve usually leaves the brachial plexus as a single branch, or it may be combined with the medial antebrachial cutaneous nerve.

Image 31A Image 31B Image 31C Image 31D Image 31E Image 31F

Figura della scheda «Medial Brachial Cutaneous Nerve», da Anatomy Atlases — Anatomy Atlases. Image hosted by the site it comes from. Open the original page.

Image 31G Image 31H Image 31I Image 31J Image 32A

Image 32B Image 32C Image 32D Image 32E Image 32F

Riferimenti dell’opera originale

Elenco riportato come compare nella fonte, senza normalizzazione dei formati bibliografici.

Birmingham, A. (1889) Homology and innervation of the achselbogen and pectoralis quartus, and the nature of the lateral cutaneous nerve of the thorax. J. Anat. Physiol. 23:206-223.
Henle, J. (1868) Handbuch der Systematischen Anatomy des Menschen. von Friedrich Vieweg und Sohn., Braunschweig.
Latarjet, A. (1948) Testut's Traité d'Anatomie Humaine, 9th ed., G. Doin & Cie., Paris.
Schaefer, E.A., Symington, J. and T.H. Bryce, Eds. (1915) Quain's Anatomy, 11th ed., Longmans, Green, and Co., London.
Zaluska, S., Urbanowicz, Z., Szczepinska, J. and H. Stefaniak-Woitasik. (1978) External structure of the medial cutaneous nerve of the arm in postfetal life in man. Folia Morphol. (Warsaw) 37:359-365.

Anatomical classification

Systems:: Nervous system

Content provenance

Adaptation

Adaptation of «Medial Brachial Cutaneous Nerve — Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System» by Ronald A. Bergman, Adel K. Afifi, Ryosuke Miyauchi. Source: https://www.anatomyatlases.org/AnatomicVariants/NervousSystem/Text/MedialBrachialCutaneous.shtml Original work distributed under the CC BY-NC-SA 4.0 licence (https://creativecommons.org/licenses/by-nc-sa/4.0/deed.it). Adaptation by Redazione AIVA. Changes from the original: Testo originale inglese riprodotto integralmente e riorganizzato nel formato scheda del portale (sintesi, testo, riferimenti), senza modificarne le affermazioni. La traduzione italiana non è ancora stata eseguita, e la pagina lo dichiara. Le figure non sono state copiate: sono collegate alla pagina d’origine. This publication is not approved or endorsed by the authors of the original work.

Licence

This content is distributed under the licence CC BY-NC-SA 4.0. Licences and attribution