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Flashcards in Posterior Forearm Deck (41):
1

10 muscles of posterior forearm

supinator
extensor carpi radialis longus
extensor carpi radialis brevis
extensor digitorum
extensor digiti minimi
extensor carpi ulnaris
abductor pollicis longus
extensor pollicis brevis
extensor pollicis longus
extensor indicis

2

Origin of supinator

lateral epicondyle of humerus, radial collateral ligament, annular radial ligament, olecranon

3

Insertion of supinator

lateral/posterior/anterior surfaces of radius

4

Innervation of supinator

radial nerve C5/6

5

Function of supinator

supinates forearm

6

Origin of extensor carpi radialis longus

lateral supracondylar ridge

7

Insertion of extensor carpi radialis longus

base 2nd metacarpal

8

Innervation of extensor carpi radialis longus

radial nerve C6/7

9

Function of extensor carpi radialis longus

extends and abducts hand

10

Origin of extensor carpi radialis brevis

lateral epicondyle of humerus

11

Insertion of extensor carpi radialis brevis

base 3rd metacarpal

12

Innervation of extensor carpi radialis brevis

radial nerve C7/8

13

Function of extensor carpi radialis brevis

extends and abducts hand

14

Origin of extensor digitorum

lateral epicondyle of humerus

15

Insertion of extensor digitorum

extensor expansions of fingers 2-5

16

Innervation of extensor digitorum

radial nerve C7/8

17

Function of extensor digitorum

extends wrist, MCP 2-5, IP 2-5, abducts fingers 2-5

18

Origin of extensor digiti minimi

lateral epicondyle of humerus

19

Insertion of extensor digiti minimi

extensor expansion of 5th digit

20

Innervation of extensor digit minimi

radial nerve C7/8

21

Function of extensor digiti minimi

extends 5th finger and wrist

22

Origin of extensor carpi ulnaris

lateral epicondyle of humerus and posterior surface of ulna

23

Insertion of extensor carpi ulnaris

base 5th metacarpal

24

Innervation of extensor carpi ulnaris

radial nerve C7/8

25

Function of extensor carpi ulnaris

extends and adducts hand

26

Origin of abductor pollicis longus

posterior surfaces of radius and ulna, interosseous membrane

27

Insertion of abductor pollicis longus

base 1st metacarpal

28

Innervation of abductor pollicis longus

radial nerve C7/8

29

Function of abductor pollicis longus

abducts, extends and laterally rotates the thumb, abducts the hand

30

Origin of extensor pollicis brevis

posterior surface of radius and interosseous membrane

31

Insertion of extensor pollicis brevis

base 1st proximal phalanx

32

Innervation of extensor pollicis brevis

radial nerve C7/8

33

Function of extensor pollicis brevis

extends MCP, CMC of thumb and abducts hand

34

Origin of extensor pollicis longus

posterior surface of ulna and interosseous membrane

35

Insertion of extensor pollicis longus

base 1st distal phalanx

36

Innervation of extensor pollicis longus

radial nerve C7/8

37

Function of extensor pollicis longus

extends MCP, IP of thumb and abducts thumb

38

Origin of extensor indicis

posterior surface of ulna and interosseous membrane

39

Insertion of extensor indicis

extensor expansion of 2nd digit

40

Innervation of extensor indicis

radial nerve C7/8

41

Function of extensor indicis

extends index finger