test 2 hand muscles Flashcards Preview

Gross Anatomy > test 2 hand muscles > Flashcards

Flashcards in test 2 hand muscles Deck (51):
0

thenar muscles of intrinsic hand

-opponens pollicis
-abductor pollicis brevis
-flexor pollicis brevis:superficial and deep heads
-adductor pollicis: oblique and transverse heads

1

opponens pollicis proximal attachment origin

flexor retinaculum and tubercles of scaphoid and trapezium

2

opponens pollicis distal attachment insertion

latteral side of first meta carpal

4

opponens pollicis innervation

recurrent branch of median nerve C8 T1

5

opponens pollicis action

to oppose thumb, it draws 1st meta carpal medially to center of palm and rotates it medially

6

abductor pollicis brevis proximal attachment origin

flexor retinaculum and tubercles of scaphoid and trapezium

7

abductor pollicis brevis distal attachment insertion

lateral side of base of proximal phalanx of thumb

8

abductor pollicis brevis inervation

recurrent branch of median nerve C8 T1

9

abductor pollicis brevis action

-abducts thumb
- helps oppose it

10

flexor pollicis brevis:
superficial head
deep head
proximal attachment origin

flexor retinaculum and tubercles of scaphoid and trapezium

11

flexor pollicis brevis:
superficial head
deep head
distal attachment insertion

lateral side of base of proximal phalanx of thumb

12

flexor pollicis brevis:
superficial head
deep head
innervation

recurrent branch of median nerve C8 T1

13

flexor pollicis brevis:
superficial head
deep head
action

flexes thumb

14

adductor pollicis : oblique head proximal attachment origin

-base of 2nd and 3rd metacarpals
-capitate adjacent to carpals

15

adductor pollicis : oblique head distal attachment insertion

medial side of base of proximal phalanx of thumb

16

adductor pollicis : oblique head innervation

deep branch of ulnar nerve C8 T1

17

adductor pollicis : oblique head action

adducts thumb toward lateral border of palm

18

adductor pollicis : transverse head proximal attachment origin

anterior surface of shaft of rd meta carpal

19

adductor pollicis : transverse head distal attachment insertion

medial side of base of proximal phalanx of thumb

20

adductor pollicis : transverse innervation

deep branch of ulmar nerve C8 T1

21

adductor pollicis : transverse action

adducts thumb toward lateral border of palm

22

hypothenar muscles of hand

-abductor digiti minimi
-flexor digiti minimi brevis
-opponens digiti minimi

23

abductor digiti minimi proximal attachment origin

pisiform

24

abductor digiti minimi istal attachment insertion

medial side of base of proximal phalanx of 5th finger

25

abductor digiti minimi innervation

deep branch of ulnar nerve C8 T1

26

abductor digiti minimi action

-abducts 5th finger
-assists in flexion of its proximal phalanx

27

flexor digiti minimi brevis proximal attachment origin

hook of hamate and flexor retinaculum

28

flexor digiti minimi brevis distal attachment insetion

medial side of base of proximal phalanx of 5th finger

29

flexor digiti minimi brevis innervation

deep branch of ulnar nerve C8 T1

30

flexor digiti minimi brevis action

flexes proximal phalanx of 5th finger

31

opponens digiti minimi proximal attachment origin

hook of hamate and flexor retinaculum

32

opponens digiti minimi distal attachment insertion

medial border of 5th metacarpal

33

opponens digiti minimi innervtion

deep branch of ulnar nerve C8 T1

34

opponens digiti minimi action

-draws 5th metacarpal anterior and rotates it, brings 5th finger into opposition with thumb

35

short muscles of hand

-lumbrical 1,2,3,4
-dorsal interossei 1-4
-palmar interossei 1-3

36

lumbricals 1 and 2 proximal attachment origin

latteral two tendons of flexor digitorum profundus (as unipennate muscles)

37

lumbricals 1 and 2 distal attachment insertion

lateral sides of extensor expansions of 2nd - 5th fingers

38

lumbricals 1 and 2 innervation

median nerve C8 T1

39

lumbricals 1 and 2 action

-flex metacarpophalangeal joints
-extend interphalangeal joints of 2nd - 5th fingers

40

lumbricals 3 and 4 proximal attachment origin

medial three tendons of flexor digitorum profundus (as bipennate muscles)

41

lumbricals 3 and 4 distal ttachment insertion

lateral sides of extensor expansions of 2nd -5th fingers

42

lumbricals 3 and 4 innervation

deep branch of ulnar nerve C8 T1

43

lumbricals 3 and 4 action

-flex metacarpophalangeal joints
-extend interphalangeal joints of 2nd - 5th fingers

44

dorsal interossei 1-4 proximal attachment origin

adjacent sides of two metacarpals (as bipennate muscles)

45

dorsal interossei 1-4 distal attachment insertion

- base of proximal phalanges
-extensor expansions of 2nd -4th fingers

46

dorsal interossei 1-4 innervation

deep branch of ulnar nerve C8 T1

47

dorsal interossei 1-4 action

-abduct 2nd -4th fingers from axial line

-act with lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints

48

palmar interossei 1-3 proximal attachment origin

palmar surfaces of 2nd 4th and 5th metacarpals (as unipennate muscles)

49

palmar interossei 1-3 distal attachment insertion

-bases of proximal phalanges
-extensor expansions of 2nd 4th and 5th fingers

50

palmar interossei 1-3 innervation

deep branch of ulnar nerve C8 T1

51

palmar interossei 1-3 action

-adduct 2nd 4th and 5th fingers towards axial line
-assist lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints