Download UL - innervation of muscles

UL - innervation of muscles
The musculocutaneous nerve supplies the muscles in the anterior (flexor)
compartment of the forearm. (BBC)
Biceps brachii
Brachialis
Coracobrachialis
The radial nerve supplies the muscles in the posterior (extensor) compartment of
the arm and forearm.
Arm
Triceps
Anconeus
Forearm (superficial layer)
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
Extensor digitorum (communis)
Extensor digiti minimi
Forearm (deep layer)
Supinator
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Extensor indicis
The median nerve supplies the muscles in the anterior (flexor) compartment of the
forearm and the thenar muscles.
Forearm (superficial layer)
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Forearm (deep layer)
Flexor digitorum profundus (lateral half, medial half by ulnar nerve)
Flexor pollicis longus
Pronator quadratus
Thenar muscles
Flexor pollicis brevis
Abductor pollicis brevis
Opponens pollicis
Lumbricals – lateral 2 to index and middle fingers
The ulnar nerve supplies 2 muscles in the anterior (flexor) compartment of the
forearm and the rest of the muscles in the palm.
Forearm (superficial layer)
Flexor carpi ulnaris
Forearm (deep layer)
Flexor digitorum profundus (medial half, lateral half by median nerve)
Hypothenar muscles
Flexor digiti minimi
Abductor digiti minimi
Opponens digiti minimi
Adductor pollicis
Lumbricals – medial 2 to ring and little fingers
Interossei – palmar and dorsal