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Flashcards in Deep posterior forearm Deck (20):
1

Innervation of deep posterior forearm

Radial nerve

2

Origins of supinator

Lateral epicondyle
Posterior surface of ulna

3

Attachment of supinator

Posterior surface of radius

4

Action of supinator

Supination of forearm

5

Origin of abductor pollicis longus

Interosseous membrane,
adjacent surfaces of radius and ulna

6

Attachment of abductor pollicis longus

Lateral side of base of metacarpal 1

7

Action of abductor pollicis longus

Abduction of thumb

8

Origin of extensor pollicis longus

Posterior surface of ulna
Interosseous membrane

9

Attachment of extensor pollicis longus

Distal phalanx of thumb

10

Action of extensor pollicis longus

Extension of all thumb joints

11

Origin of extensor indicis

Posterior surface of ulna
Interosseous membrane

12

Attachment of extensor indicis

Extensor hood of index finger

13

Action of extensor indicis

Extends all index finger joints

14

Origin of extensor digiti minimi

Lateral epicondyle

15

Attachment of extensor digiti minimi

Extensor hood of little finger

16

Action of extensor digiti minimi

Extends little finger
Contributes to wrist extension

17

Origin of extensor pollicis brevis

Posterior surface of radius
Interosseous membrane

18

Attachment of extensor pollicis brevis

Base of proximal phalanx of thumb

19

Action of extensor pollicis brevis

Extends at CMC and MCP of thumb

20

Muscles of deep posterior forearm

Supinator,
Abductor pollicis longus,
Extensor pollicis longus,
Extensor indicis,
Extensor digiti minimi,
Extensor pollicis brevis

Decks in MSK Class (87):