Upper limb muscle function

Biceps brachii (long and short head)

Flexion of the elbow joint, supination, abduction, and medial rotation of the humerus

Brachialis

Flexes antebrachium

Coracobrachialis

Adducts and flexes arm

Triceps Brachii

Extends antebrachium

Triceps Brachii (only long head)

Extends antebrachium and adducts and extends arm

Bachioradialis

Flexes antebrachium

Pronator Teres

Pronates antebrachium

Supinator

Supinates antebrachium

Palmaris longus

Flexes wrist weakly and helps with pinching strength for fourth and fifth fingers

Flexor carpi ulnaris

Flexes and adducts the hand (at the wrist)

Flexor carpi radialis

Flexes and abducts the hand (at the wrist)

Flexor digitorum superficialis

Flexes the fingers and wrist

Flexor digitorum profundus

Flexes the fingers and wrist

Flexor pollicis longus

Flexes thumb, weakly flexes wrist

Flexor pollicis brevis

Flexes thumb

Extensor digitorum

Extends fingers and wrist

Extensor digiti minimi

Extends pinkie finger and weakly extends wrist

Extensor carpi radialis longus

Extends wrist, abducts hand (at wrist)

Extensor carpi radialis brevis

Extends wrist, adducts hand (at wrist)

Extensor carpi ulnaris

Extends wrist, adducts hand (at wrist)

Extensor indicis

Extends index finger, weakly extends wrist

Extensor pollicis longus

Extends thumb, weak wrist extension

Extensor pollicis bervis

Extends thumb, extends wrist weakly

Abductor pollicis longus

Abducts thumb

Abductor pollicis brevis

Abducts thumb