Extensor Muscles Of Forearm(deep layer)

Question 0

Supinator d.a.

Answer 0

Lateral, posterior, and anterior surfaces of proximal third of radius

Question 1

Supinator p.a.

Answer 1

LEH

Question 2

Supinator innervation

Answer 2

Deep branch of radial nerve

C7c8

Question 3

Supinator action

Answer 3

Supinates forearm

Question 4

Abductor pollicis longus p.a.

Answer 4

Posterior surface of proximal halves of ulna, radius, and interosseous membrane

Question 5

Abductor pollicis longus d.a.

Answer 5

Base of first metacarpal

Question 6

Abductor pollicis longus innervation

Answer 6

Posterior interosseous nerve
C7c8
Cont. of deep branch of radial nerve

Question 7

Abductor pollicis longus action

Answer 7

Abducts thumb and extends it at carpometacarpal joint

Question 8

Extensor pollicis longus p.a.

Answer 8

Posterior surface of middle third of ulna and interosseous membrane

Question 9

Extensor pollicis longus d.a.

Answer 9

Dorsal aspect of base of distal phalanx of thumb

Question 10

Extensor pollicis longus innervation

Answer 10

Posterior interosseous nerve
C7c8
Cont. of deep branch of radial nerve

Question 11

Extensor pollicis longus action

Answer 11

Extends distal phalanx of thumb at interphalangeal joint

Question 12

Extensor pollicis brevis p.a.

Answer 12

Posterior surface of distal third of radius and interosseous membrane

Question 13

Extensor pollicis brevis d.a.

Answer 13

Dorsal aspect of base of proximal phalanx of thumb

Question 14

Extensor pollicis brevis innervation

Answer 14

Posterior interosseous nerve
C7c8
Cont. of deep branch of radial nerve

Question 15

Extensor pollicis brevis action

Answer 15

Extends proximal phalanx of thumb at metacarpophalangeal joint

Question 16

Extensor indicis p.a.

Answer 16

Posterior surface of distal third of ulna and interosseous membrane

Question 17

Extensor indicis d.a.

Answer 17

Extensor expansion of 2nd finger

Question 18

Extensor indicis innervation

Answer 18

Posterior interosseous nerve
C7c8
Cont. of deep branch of radial nerve

Question 19

Extensor indicis action

Answer 19

Extends 2nd finger(enabling its independent extension)