Biceps brachii
Flexes the forearm and supinates the hand
Supinator
Synergist for supinating the hand
Brachialis
Forearm flexor; no role in supination
Brachioradialis
Forearm flexor; no role in supination
Triceps brachii
Elbow extensor
Flexor carpi radialis
Power wrist flexor and abductor
Flexor digitorum superficialis
Flexes the wrist and middle phalanges
Pronator quadratus
Pronates the hand
Pronator teres
Pronates the hand
Flexor pollicis longus
Flexes the thumb
Extensor carpi radialis longus
Extends and abducts the wrist
Extensor digitorum
Extends the wrist and digits
Palmaris longus
Flat muscle that is a weak wrist flexor; tenses skin of palm.