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Posterior cord
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Posterior cord | |
---|---|
Details | |
From | brachial plexus - posterior divisions of the three trunks |
To |
subscapular, up. and low. thoracodorsal axillary radial |
Innervates | none |
Identifiers | |
Latin | fasciculus posterior plexus brachialis |
TA98 | A14.2.03.023 |
TA2 | 6416 |
FMA | 45237 |
Anatomical terms of neuroanatomy |
The posterior cord is a part of the brachial plexus. It consists of contributions from all of the roots of the brachial plexus.
The posterior cord gives rise to the following nerves:
Name | Roots | Supplies |
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 |
Additional images
MBBS resources http://mbbsbasic.googlepages.com/
External links
- Atlas image: hand_plexus at the University of Michigan Health System - "Axilla, dissection, anterior view"
Supraclavicular | |||||||
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Infraclavicular |
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Other |