충양근(손)(lumbricals of hand)

LUMBRICALS

Origin Four tendons of flexor digitorum profundus. Radial 2: radial side only (unipennate). Ulnar 2: cleft between tendons( bipennate)		Action Flex MCP jnts and extend IP jnts of fingers
Insertion Extensor expansion (dorsum of prox phalanx ) of fingers 2-5 radial side		Nerve Lat 2: median N (C8, T1). Med 2: deep br of ulnar N (C8, T1)