Muscles of the Forearm That Move Wrist, Hand & Fingers

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Abductor pollicis longus

Action: Abducts thumb

Extensor digitorum

Action: Extends fingers Antagonist: Flexor digitorum profundus

Extensor indicis

Action: Extends index finger

Extensor pollicis longus

Action: Extends thumb Antagonist: Flexor pollicis longus

Extensor pollicis brevis

Action: Extends thumb Antagonist: Flexor pollicus longus

Extensor carpi radialis longus

Action: Extends wrist Synergist: Extensor carpi radialis brevis Antagonist: Flexor carpi radialis

Extensor carpi radialis brevis

Action: Extends wrist Synergist: Extensor carpi radialis longus Antagonist: Flexor carpi radialis

Extensor carpi ulnaris

Action: Extends wrist Synergist: Extensor carpi radialis longus Antagonist: Flexor carpi ulnaris

Flexor digitorum profundus

Action: Flexes fingers Synergist: Flexor digitorum superficialis Antagonist: Extensor digitorum

Flexor digitorum superficialis

Action: Flexes fingers and eventually wrist Synergist: Flexor digitorum profundus Antagonist: Extensor digitorum

Flexor pollicis longus

Action: Flexes thumb Antagonist: Extensor pollicis longus

Flexor carpi ulnaris

Action: Flexion at wrist Synergist: Flexor carpi radialis Antagonist: Extensor carpi radialis longus

Flexor carpi radialis

Action: Flexion at wrist Synergist: Flexor carpi ulnaris Antagonist: Extensor carpi ulnaris

Palmaris longus

Action: Flexion at wrist Synergist: Flexor carpi ulnaris Antagonist: Extensor carpi ulnaris

Pronator teres

Action: Pronation of palm Synergist: Pronator quadratus Antagonist: Supinator

Pronator quadratus

Action: Pronation of palm Synergist: Pronator teres Antagonist: Supinator

Supinator

Action: Supinates palm Synergist: Biceps brachii Antagonist: Pronator quadratus


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