extensor pollicis longus Flashcards
(4 cards)
1
Q
extensor pollicis longus origin
A
middle 1/3 posterior surface of ulna & adjacent interosseous membrane
2
Q
extensor pollicis longus insertion
A
dorsal surface, base of distal phalanx of thumb
3
Q
extensor pollicis longus nerve supply
A
radial nerve C7, 8
4
Q
extensor pollicis longus action
A
extends all joints of the thumb, extends and abducts wrist
