근육계

장모지신근(extensor pollicis longus)

한 울 타 리 2006. 3. 3. 10:35

EXTENSOR POLLICIS LONGUS

Origin

Middle third of post ulna (below abductor pollicis longus) and adjacent interosseous membrane

Action

Extends IP and MCP jnts of thumb

Insertion

Base of distal phalanx of thumb via Lister's tubercle (dorsal tubercle of radius).

Nerve

Post interosseous N (C7 , 8 )