Long Muscles of the Thumb

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Author:
jcandyj_80alba
ID:
151486
Filename:
Long Muscles of the Thumb
Updated:
2012-05-01 16:30:40
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Long Muscles Thumb
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Long Muscles of the Thumb
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  1. what are the muscles of the functional group of the the long muscles of the thumb
    • abductor pollicis longus
    • extensor pollicis longus and brevis
  2. Action of Abductor Pollicis Longus
    • Abduct the thumb
    • Extend the thumb
    • abduct the wrist
  3. Origin of the abductor Pollicis Longus
    • posterior surface of radius and ulna, and
    • interosseous membrane
  4. Insertion of Abductor Pollicis Longus
    Base of the 1st metacarpal
  5. Action of the Extensor Pollicis Longus and Brevis
    Extend the thumb at the interphalangeal joint, metacarpophalangeal joint, and carpmetacarpal joints

    abduct the wrist
  6. Origin of the Extensor Pollicis Longus
    Posterior surface of ulna and interosseous membrane
  7. Origin of the extensor pollicis brevis
    posterior surface of radius and interosseous membrane
  8. Insertion of extensor pollicis longus
    base of distal phalanx of thumb
  9. insertion of extensor pollicis brevis
    base of proximal phalanx of thumb
  10. Action of Flexor Pollicis Longus
    • Flex the thumb at the interphalangeal joint, metacarpophalangeal and carpometacarpal joints
    • Assist to flex the wrist
  11. Origin of the Flexor Pollicis longus
    Anterior surface of radius and interosseous membrane
  12. Insertion of Flexor Pollicis Longus
    Base of the distal phalanx of the thumb

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