The superior lateral cutaneous nerve of arm (or superior lateral brachial cutaneous nerve) is the continuation of the posterior branch of the
axillary nerve
The axillary nerve or the circumflex nerve is a nerve of the human body, that originates from the brachial plexus (upper trunk, posterior division, posterior cord) at the level of the axilla (armpit) and carries nerve fibers from C5 and C6. The a ...
, after it pierces the deep fascia. It contains axons from C5-C6 ventral rami.
Structure
It sweeps around the posterior border of the
deltoideus
The deltoid muscle is the muscle forming the rounded contour of the human shoulder. It is also known as the 'common shoulder muscle', particularly in other animals such as the domestic cat. Anatomically, the deltoid muscle appears to be made up o ...
and supplies the skin over the lower two-thirds of the posterior part of this muscle, as well as that covering the long head of the
triceps brachii
The triceps, or triceps brachii (Latin for "three-headed muscle of the arm"), is a large muscle on the back of the upper limb of many vertebrates
Vertebrates () comprise all animal taxa within the subphylum Vertebrata () ( chordates with ba ...
.
See also
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Posterior cutaneous nerve of arm
The posterior cutaneous nerve of arm (internal cutaneous branch of musculospiral, posterior brachial cutaneous nerve) is a branch of the radial nerve that provides sensory innervation for much of the skin on the back of the arm. It arises in the a ...
(Posterior brachial)
*
Medial cutaneous nerve of arm
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 brachial)
*
Lateral cutaneous nerve of forearm
The lateral antebrachial cutaneous nerve (or lateral cutaneous nerve of forearm) (branch of musculocutaneous nerve, also sometimes spelled "antebrachial") passes behind the cephalic vein, and divides, opposite the elbow-joint, into a volar and ...
(Lateral antebrachial)
Additional images
File:Gray811and813.PNG, Cutaneous nerves of right upper extremity.
File:Gray812and814.PNG, Diagram of segmental distribution of the cutaneous nerves of the right upper extremity.
References
External links
Photo at mun.ca
Nerves of the upper limb
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