posterior compartment deep group muscles

Question 1

abductor pollicis longus origin

Answer 1

• posterior radius
• ulna
• IOM

Question 2

abductor pollicis longus insertion

Answer 2

base of MC 1

Question 3

abductor pollicis action

Answer 3

ABD and extension of thumb

Question 4

abductor pollicis longus innervation

Answer 4

radial nerve

Question 5

extensor pollicis longus origin

Answer 5

• posterior ulna
• IOM

Question 6

extensor pollicis longus insertion

Answer 6

distal phalanx 1

Question 7

extensor pollicis longus action

Answer 7

extension of thumb

Question 8

extensor pollicis longus innervation

Answer 8

radial nerve

Question 9

extensor pollicis brevis origin

Answer 9

• posterior radius
• IOM

Question 10

extensor pollicis brevis insertion

Answer 10

dorsal base of proximal phalanx of thumb

Question 11

extensor pollicis breve action

Answer 11

extend thumb

Question 12

extensor pollicis brevis innervation

Answer 12

radial nerve

Question 13

extensor indices origin

Answer 13

• posterior ulna
• IOM

Question 14

extensor indices insertion

Answer 14

dorsal surface digit #2

Question 15

extensor indicis action

Answer 15

extend index finger

Question 16

extensor indicis innervation

Answer 16

radial nerve

Question 17

supinator origin

Answer 17

• lateral epicondyle humerus
• anular ligament

Question 18

supinator insertion

Answer 18

lateral proximal 1/3 radius

Question 19

supinator action

Answer 19

supinate forearm

Question 20

supinator innervation

Answer 20

radial nerve