Test 2 Anterior Forearm Muscles Flashcards Preview

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Flashcards in Test 2 Anterior Forearm Muscles Deck (35):
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superficial (first) layer
anterior compartment of forearm

-Pronator teres (PT)
-flexor carpi radialis (FCR)
-palmaris longus
-flexor carpi ulnaris (FCU)

1

Pronator teres (PT) proximal attachment, origin

ulnar head:coronoid process of ulna

humeral head: medial epicondyle of the humerus

2

Pronator teres (PT) distal attachment, insertion

Middle of convexity of lateral surface of radius

3

pronator teres (PT) innervation

median nerve
C6 C7

4

pronator Teres (PT) action

pronates and flexes forearm(at elbow)

5

flexor carpi radialis (FCR) proximal attachment, origin

medial epicondyle of humerus

6

flexor carpi radialis (FCR) distal attachment insertion

base of 2nd (&3rd) metacarpal

7

flexor carpi radialis (FCR) innervation

median nerve
C6 C7

8

flexor carpi radialis (FCR) action

flexes and abducts hand (at wrist)

9

palmaris longus proximal attachment, origin

medial epicondyle of humerus

10

palmaris longus distal attachment insertion

-distal 1/2 of flexor retinaculum
-palmar aponeurosis

11

palmaris longus innervation

median nerve
C7 C8

12

palmaris longus action

flexes hand (at wrist) and tenses palmar aponeurosis

13

flexor carpi ulnaris (FCU) proximal attachment origin

olecranon and posterior border (via aponeurosis)

14

flexor carpi ulnaris (FCU) distal attachment insertion

-pisiform
-hook of the hammate
-5th metacarpel

15

flexor carpi ulnaris (FCU) innervation

ulnar nerve C7 C8

16

flexor carpi ulnaris (FCU):(humeral head, ulnar head) action

flexes and adducts hand (at wrist)

17

intermediate (second) layer
anterior compartment of forearm

-flexor digitorum superficialis (FDS)

18

flexor digitorum superficialis (FDS) proximal attachment, origin

humero-ulnar head: medial epicondyle of humerus and corocoid process of ulna

radial head: oblique line of radius

19

flexor digitorum superficialis (FDS) distal attachment insertion

shafts (bodies) of middle phalanges of medial four digits

20

flexor digitorum superficialis (FDS) innervation

medial nerve
C7 C8 T1

21

flexor digitorum superficialis (FDS) action

-flexes proximal interphalangeal jooints of middle four digits; acting more strongly
-also flexes proximal phalanges at metacarpophalangeal joints

22

deep (third) layer anterior compartment of forearm

-flexor digitoum profundus (FDP)
-flexor pollicis longus (FPL)
-pronator quadratus

23

flexor digitoum profundus (FDP) proximal attachment, origin

proximal three quarters of medial and anterior surfaces of ulna and interosseou membrane

24

flexor digitoum profundus (FDP) distal attachment, insertion

base of distal phalanes of 2nd 3rd 4th and 5th digits

25

flexor digitoum profundus (FDP) innervation

lateral part (to digits 2 and 3): median nerve C8 T1(anterior onterosseous branch)

medial part(to digits 4 and 5):ulnar nerve C8 T1

26

flexor digitoum profundus (FDP) action

flexes interphalangeal joints of digits 2,3,4,5 assists with wrist flexion

27

flexor pollicis longus (FPL) proximal attachment origin

anterior surface of radius and adjacent interosseous membrane

28

flexor pollicis longus (FPL) distal attachment insertion

base of distal phalanx of thumb

29

flexor pollicis longus (FPL) innervation

anterior interosseous nerve from median nerve C8 T1

30

flexor pollicis longus (FPL) action

flaexes phalanges of first digit
thumb

31

Pronator quadratus proximal attachment origin

distal quarter of anterior surface of ulna

32

Pronator quadratus distal attachment insertion

distal quarter of anterior surface of radius

33

Pronator quadratus innervation

anterior interosseous nerve from median nerve C8 T1

34

Pronator quadratus action

-pronates forearm
-deep fibers bind radius and ulna together