teres major/minor, triceps brachii, common palmar digital nerves of median n, axillary n, medial cutaneous n of forearm/arm, median n, musculocutaneous n, radial n
suprascapular n, ulnar n, median/lateral root of median n, dorsal branch of ulnar n, superficial branch of radial n, extensor retinaculum, flexor retinaculum, deltopectoral groove