![](http://new.wheelessonline.com/media/2020/07/brch1a.jpg)
- Anatomy:
- arises from anterior division of lower trunk: C8 & T1;
- medial cord branches into ulnar nerve & the medial root of the median nerve;
- medial pectoral
- medial branchial cutaneous
- medial antebrachial cutaneous
- division of medial cord causes combined median & ulnar nerve deficit