Plan of brachial plexus. (Posterior cord is shaded gray.)
The right brachial plexus with its short branches, viewed from in front. The Sternomastoid and Trapezius muscles have been completely removed, the Omohyoid and Subclavius have been partially removed; a piece has been sawed out of the clavicle; the Pectoralis muscles have been incised and reflected.
|From||brachial plexus - posterior divisions of the three trunks|
|To||subscapular, up. and low.
|Latin||fasciculus posterior plexus brachialis|
|Anatomical terms of neuroanatomy|
The posterior cord gives rise to the following nerves:
|upper subscapular nerve||C5-C6||subscapularis muscle of the rotator cuff|
|lower subscapular nerve||C5-C6||subscapularis muscle, teres major muscle|
|thoracodorsal nerve||C6-C8||latissimus dorsi muscle|
|axillary nerve||C5-C6||sensation to the shoulder and motor to the deltoid muscle, the teres minor and the triceps brachii (long head) muscle|
|radial nerve||C5-C8, T1||triceps brachii muscle, the brachioradialis muscle, the extensor muscles of the fingers and wrist (extensor carpi radialis muscle), supinator, and the extensor and abductor muscles of the thumb|
MBBS resources http://mbbsbasic.googlepages.com/
- Atlas image: hand_plexus at the University of Michigan Health System - "Axilla, dissection, anterior view"
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