Muscles Quiz 3/ Deep Posterior Forearm

Question 1

Supinator Action

Answer 1

Supinates the forearm

Question 2

Supinator Origin

Answer 2

Lateral epicondyle of humerus, proximal ulna

Question 3

Supinator Insertion

Answer 3

Proximal end of radius

Question 4

Supinator Nerve Supply

Answer 4

Radial Nerve (Posterior surface of arm and forearm, and postereolateral surface of the hand)

Question 5

Abductor pollicis longus Action

Answer 5

Abducts thumb

Question 6

Abductor pollicis longus Origin

Answer 6

Posterior radius and ulna, interosseous membrane

Question 7

Abductor pollicis longus Insertion

Answer 7

1st metacarpal

Question 8

Abductor pollicis longus Nerve Supply

Answer 8

Radial Nerve (Posterior surface of arm and forearm, and postereolateral surface of the hand)

Question 9

Extensor pollicis brevis Action

Answer 9

Extends thumb

Question 10

Extensor pollicis brevis Origin

Answer 10

Posterior radius and ulna, interosseous membrane

Question 11

Extensor pollicis brevis Insertion

Answer 11

Proximal phalanx of thumb

Question 12

Extensor pollicis brevis Nerve Supply

Answer 12

Radial Nerve (Posterior surface of arm and forearm, and postereolateral surface of the hand)

Question 13

Extensor pollicis longus Action

Answer 13

Extends thumb

Question 14

Extensor pollicis longus Origin

Answer 14

Posterior radius and ulna, interosseous membrane

Question 15

Extensor pollicis longus Insertion

Answer 15

Distal phalanx of thumb

Question 16

Extensor pollicis longus Nerve Supply

Answer 16

Radial Nerve (Posterior surface of arm and forearm, and postereolateral surface of the hand)

Question 17

Extensor indicis Action

Answer 17

Extends 2nd digit

Question 18

Extensor indicis Origin

Answer 18

Posterior ulna and radius, interosseous membrane

Question 19

Extensor indicis Insertion

Answer 19

Tendon of extensor digitorum

Question 20

Extensor indicis Nerve supply

Answer 20

Radial Nerve (Posterior surface of arm and forearm, and postereolateral surface of the hand)