Brachial plexus the axillary a Roots (ventral rami) ◆ Roots-5 ◆ Trunks-3 ◆ Divisions-6 T1 Lateral cord ◆ Cords-3 Posterior cord ◆ Branches5 Lateral root of Axillary the median n Medial cord Medial root of the median n ● Median n Median n o Ulnar n Axillary n. Pectoralis minor ● Radia|n. Musculocutaneous n ● AXillary r ● Musculocutaneous n Radial nBrachial plexus & the axillary a. Roots-5 Trunks-3 Divisions-6 Cords-3 Branches-5  Median n.  Ulnar n.  Radial n.  Axillary n.  Musculocutaneous n. Axillary a