근육계

모지내전근(abductor pollicis brevis)

한 울 타 리 2006. 3. 3. 09:20

ABDUCTOR POLLICIS BREVIS

Origin

Tubercle of scaphoid & flexor retinaculum


Action

Abducts thumb at MCP & CMC jnts

Insertion

Radial sesamoid of prox phalanx of thumb & tendon of extensor pollicis longus

Nerve

Recurrent (muscular) br of median N (C8, T1) occasionally by ulnar N