Extensor Muscles Of Forearm(deep layer) Flashcards Preview

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Flashcards in Extensor Muscles Of Forearm(deep layer) Deck (20)
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Supinator p.a.

LEH

1

Supinator d.a.

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

2

Supinator innervation

Deep branch of radial nerve
C7c8

3

Supinator action

Supinates forearm

4

Abductor pollicis longus p.a.

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

5

Abductor pollicis longus d.a.

Base of first metacarpal

6

Abductor pollicis longus innervation

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

7

Abductor pollicis longus action

Abducts thumb and extends it at carpometacarpal joint

8

Extensor pollicis longus p.a.

Posterior surface of middle third of ulna and interosseous membrane

9

Extensor pollicis longus d.a.

Dorsal aspect of base of distal phalanx of thumb

10

Extensor pollicis longus innervation

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

11

Extensor pollicis longus action

Extends distal phalanx of thumb at interphalangeal joint

12

Extensor pollicis brevis p.a.

Posterior surface of distal third of radius and interosseous membrane

13

Extensor pollicis brevis d.a.

Dorsal aspect of base of proximal phalanx of thumb

14

Extensor pollicis brevis innervation

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

15

Extensor pollicis brevis action

Extends proximal phalanx of thumb at metacarpophalangeal joint

16

Extensor indicis p.a.

Posterior surface of distal third of ulna and interosseous membrane

17

Extensor indicis d.a.

Extensor expansion of 2nd finger

18

Extensor indicis innervation

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

19

Extensor indicis action

Extends 2nd finger(enabling its independent extension)