Posterior cord of brachial plexus
Fasciculus posterior plexus brachialis
- Related terms: Posterior cord
Definition
- The anterior divisions of the upper and middle trunks of the brachial plexus unite to form a cord, which is situated on the lateral side of the second part of the axillary artery, and is called the lateral cord or fasciculus of the plexus.
- Musculocutaneous: 5, 6, 7 C
- Lateral anterior thoracic: 5, 6, 7 C
- Lateral head of median: 6, 7 C
- The anterior division of the lower trunk passes down on the medial side of the axillary artery, and forms the medial cord or fasciculus of the brachial plexus.
- Medial anterior thoracic: 8 C, 1 T
- Medial antibrachial cutaneous: 8 C, 1 T
- Medial brachial cutaneous: 8 C, 1 T
- Ulnar: 8 C, 1 T
- Medial head of median: 8 C, 1 T
- The posterior divisions of all three trunks unite to form the posterior cord or fasciculus of the plexus, which is situated behind the second portion of the axillary artery.
- Upper subscapular: 5, 6 C
- Lower subscapular: 5, 6 C
- Thoracodorsal: 5, 6, 7 C
- Axillary: 5, 6 C
- Radial: 6, 7, 8 C, 1 T
References
Text by Antoine Micheau, MD - Copyright IMAIOS
