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 |