Forearm Muscles Post. Flashcards
Extensor Carpi radialis longus
O: lateral supracondylar ridge
I: metacarpal 2
A: extends wrist and abducts hand
Extensor Capri radialis brevis
O: lateral epicondyle
I: metacarpal 3
A: extends wrist & abducts hand
Extensor digitorum communis
O: lateral epicondyle
I: middle and distal phalanges 2-5
A: extends fingers 2-5
Extensor digiti minimi
O: lateral epicondyle
I: proximal phalanx of digit 5
A: extends finger 5
Extensor Carpi ulnaris
O: lateral epicondyle
I: metacarpal 5
A: extends wrist & adducts hand
Extensor indicis
O: posterior ulna
I: tendon of extensor digitorum communis
A: extends finger 2
Abductor pollicis longus
O: radius and ulna
I: metacarpal 1
A: abducts thumb
Extensor pollicis brevis
O: radius
I: proximal phalanx of thumb
A: extends thumb
Extensor pollicis longus
O: ulna
I: distal phalanx of thumb
A: extends thumb
Extensor retinaculum
Posterior wrist
Carpal tunnel
Underneath the flexor retinaculum
