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Long Muscles of the Thumb
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what are the muscles of the functional group of the the long muscles of the thumb
abductor pollicis longus
extensor pollicis longus and brevis
Action of Abductor Pollicis Longus
Abduct the thumb
Extend the thumb
abduct the wrist
Origin of the abductor Pollicis Longus
posterior surface of radius and ulna, and
interosseous membrane
Insertion of Abductor Pollicis Longus
Base of the 1st metacarpal
Action of the Extensor Pollicis Longus and Brevis
Extend the thumb at the interphalangeal joint, metacarpophalangeal joint, and carpmetacarpal joints
abduct the wrist
Origin of the Extensor Pollicis Longus
Posterior surface of ulna and interosseous membrane
Origin of the extensor pollicis brevis
posterior surface of radius and interosseous membrane
Insertion of extensor pollicis longus
base of distal phalanx of thumb
insertion of extensor pollicis brevis
base of proximal phalanx of thumb
Action of Flexor Pollicis Longus
Flex the thumb at the interphalangeal joint, metacarpophalangeal and carpometacarpal joints
Assist to flex the wrist
Origin of the Flexor Pollicis longus
Anterior surface of radius and interosseous membrane
Insertion of Flexor Pollicis Longus
Base of the distal phalanx of the thumb
Author
jcandyj_80alba
ID
151486
Card Set
Long Muscles of the Thumb
Description
Long Muscles of the Thumb
Updated
5/1/2012, 8:30:40 PM
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