Terminal nerves of the brachial plexus and their motor innervation

Nerve	Derived from roots	Innervated muscles	Motor effect
Musculocutaneous	C6	Biceps brachii, coracobrachialis, brachialis	Elbow flexion, forearm supination
Axillary	C5/C6	Deltoid, teres minor	Shoulder abduction, external rotation
Median	C5C6/C7/C8/T1	Pronator teres, flexor carpi radialis, flexor digitorum superficialis, flexor digitorum profundus, palmaris longus, abductor pollicis brevis, opponens pollicis, flexor pollicis brevis, lumbricals	Flexion of wrist and digits, forearm pronation, wrist abduction, thumb abduction, flexion and opposition
Radial	C5C6/C7/C8/T1	Triceps, extensor carpi radialis, extensor carpi ulnaris, extensor pollicis, supinator	Extension at elbow, wrist and fingers; forearm supination
Ulnar	C8/T1	Flexor carpi ulnaris, lumbricals, interossei, adductor pollicis, opponens digiti minimi, abductor digitorum minimi, flexor digiti minimi brevis, flexor digitorum profundus	Wrist flexion and adduction, digit flexion, adduction and abduction, little finger opposition

Graphic 131010 Version 2.0