Passes in front of the plexus to enter subclavius. May contain aberrant phrenic fibers. Lateral pectoral nerve 2. Musculocutaneous nerve 3. Medial pectoral nerve.
Supplies pectoralis major and minor.
Medial head of median nerve 3. Medial cutaneous nerve of arm 4. Medial cutaneous nerve of forearm 5. Upper subscapular nerve 2. Runs down on subscapularis and supplies latissimus dorsi.