Muscles that move Forearm, Hand, and Fingers Actions

Biceps brachii

1. Flexes forearm

2. Supinates forearm

3. Flexes arm (moves arm AND forearm)

Brachialis

1. Flexes forearm

Brachioradialis

1. Flexes forearm

2. Pronates forearm

Pronator teres

two-headed

1. Flexes forearm

2. Pronates forearm

Triceps brachii

1. Extends forearm

2. Extends arm (moves arm AND forearm)

Flexor carpi radialis

1. Flexes hand

2. Abducts hand

Palmaris longus

1. Flexes hand

Flexor carpi ulnaris

1. Flexes hand

2. Adducts hand

Extensor carpi radialis longus

1. Extends hand

2. Abducts hand

Extensor carpi radialis brevis

deep to counterpart, shorter than counterpart

1. Extends hand

2. Abducts hand

Extensor carpi ulnaris

1. Extends hand

2. Adducts hand

Flexor digitorum superficialis

1. Flexes digits II-V of hand

Flexor digitorum profundus

overlain entirely by more superficial partner

1. Flexes digits II-V of hand

Extensor digitorum

1. Extends digits II-IV of hand

Extensor digiti minimi

1. Extends digit V of hand

Abductor pollici longus

1. Extends pollex

2. Abducts pollex

Extensor pollicis brevis

Extends pollex