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Hand/Thumb
Origins/Insertions/Actions
| Question | Answer |
|---|---|
| Abductor Pollicis Longus | O: Posterior surface of radius and ulna, interosseous membrane I: Base of first metacarpal A: -Abduct the thumb -Extend the thumb -Abduct the wrist |
| Extensor Pollicis Longus | O: Posterior surface of ulna and interosseous membrane I: Base of distal phalanx of thumb A: -Extend the thumb -Abduct the wrist |
| Extensor Pollicis Brevis | O: Posterior surface of radius and interosseous membrane I: Base of proximal phalanx of thumb A: -Extend the thumb -Abduct the wrist |
| Flexor Pollicis Longus | O: Anterior surface of the radius and interosseous membrane I: Base of the distal phalanx of thumb A: -Flex the thumb -Assist to flex the wrist |
| Abductor Pollicis Brevis | O: Flexor retinaculum, trapezium, and scaphoid tubercules I: Base of proximal phalanx of thumb A: -Abduct the thumb -Assist in opposition of the thumb |
| Flexor Pollicis Brevis | O: -Superficial Head: Flexor retinaculum -Deep Head: Trapezium, trapezoid, capitate I: Base of proximal phalanx of thumb A: -Flex the thumb -Assist in opposition of the thumb |
| Opponens Pollicis | O: Flexor retinaculum and tubercle of the trapezium I: Entire length of first metacarpal bone, radial surface A: Opposition of the thumb at carpometacarpal joint |
| Adductor Pollicis | O: Capitate, 2nd and 3rd metacarpals I: Base of proximal phalanx of thumb A: -Adduct the thumb -Assist to flex the thumb |
| Lumbricals of the Hand | O: Surfaces of the flexor digitorum profundus tendons I: Extensor aponeurosis of dorsal surface of phalanges A: -Extend the 2nd-5th fingers -Flex the 2nd-5th fingers |
| Palmar Interossei O&I | O: Base of the 1st,2nd, 4th and 5th metacarpals I: Base of the proximal phalanx of the related finger and the extensor aponeurosis |
| Palmar Interossei Actions | A: -Adduct the thumb, 2nd, 4th, and 5th fingers toward the 3rd finger -Assist to flex and extend thumb, 2nd, 4th and 5th fingers "Flip people off" |
| Dorsal Interossei | O: Adjacent sides of all metacarpals I: Base of proximal phalanx of 2nd, 3rd & 4th fingers and extensor aponeurosis A: -Abduct 2nd, 3rd, & 4th fingers -Assist to flex and extend 2nd, 3rd & 4th fingers "Hang 10" |
| Abductor Digiti Minimi | O: Pisiform and tendon of flexor carpi ulnaris I: Base of proximal phalanx of 5th finger, ulnar surface A: -Abduct the 5th finger -Assist in opposition of the 5th finger |
| Flexor Digiti Minimi Brevis | O: Hook of hamate, flexor retinaculum I: Base of proximal phalanx of 5th finger, palmar surface A: -Flex the 5th finger -Assist in opposition of the 5th finger towards thumb |
| Opponens Digiti Minimi | O: Hook of hamate, flexor retinacululm I: Shaft of 5th metacarpal, ulnar surface A: Opposition of the 5th finger |
Created by:
maddileigh
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