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Gross Anatomy > test 2 hand muscles > Flashcards

test 2 hand muscles Flashcards

0
Q

opponens pollicis proximal attachment origin

A

flexor retinaculum and tubercles of scaphoid and trapezium

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1
Q

thenar muscles of intrinsic hand

A
  • opponens pollicis
  • abductor pollicis brevis
  • flexor pollicis brevis:superficial and deep heads
  • adductor pollicis: oblique and transverse heads
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2
Q

opponens pollicis distal attachment insertion

A

latteral side of first meta carpal

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4
Q

opponens pollicis innervation

A

recurrent branch of median nerve C8 T1

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5
Q

opponens pollicis action

A

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

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6
Q

abductor pollicis brevis proximal attachment origin

A

flexor retinaculum and tubercles of scaphoid and trapezium

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7
Q

abductor pollicis brevis distal attachment insertion

A

lateral side of base of proximal phalanx of thumb

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8
Q

abductor pollicis brevis inervation

A

recurrent branch of median nerve C8 T1

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9
Q

abductor pollicis brevis action

A
  • abducts thumb

- helps oppose it

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10
Q

flexor pollicis brevis:
superficial head
deep head
proximal attachment origin

A

flexor retinaculum and tubercles of scaphoid and trapezium

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11
Q

flexor pollicis brevis:
superficial head
deep head
distal attachment insertion

A

lateral side of base of proximal phalanx of thumb

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12
Q

flexor pollicis brevis:
superficial head
deep head
innervation

A

recurrent branch of median nerve C8 T1

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13
Q

flexor pollicis brevis:
superficial head
deep head
action

A

flexes thumb

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14
Q

adductor pollicis : oblique head proximal attachment origin

A
  • base of 2nd and 3rd metacarpals

- capitate adjacent to carpals

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15
Q

adductor pollicis : oblique head distal attachment insertion

A

medial side of base of proximal phalanx of thumb

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16
Q

adductor pollicis : oblique head innervation

A

deep branch of ulnar nerve C8 T1

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17
Q

adductor pollicis : oblique head action

A

adducts thumb toward lateral border of palm

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18
Q

adductor pollicis : transverse head proximal attachment origin

A

anterior surface of shaft of rd meta carpal

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19
Q

adductor pollicis : transverse head distal attachment insertion

A

medial side of base of proximal phalanx of thumb

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20
Q

adductor pollicis : transverse innervation

A

deep branch of ulmar nerve C8 T1

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21
Q

adductor pollicis : transverse action

A

adducts thumb toward lateral border of palm

22
Q

hypothenar muscles of hand

A
  • abductor digiti minimi
  • flexor digiti minimi brevis
  • opponens digiti minimi
23
Q

abductor digiti minimi proximal attachment origin

A

pisiform

24
Q

abductor digiti minimi istal attachment insertion

A

medial side of base of proximal phalanx of 5th finger

25
Q

abductor digiti minimi innervation

A

deep branch of ulnar nerve C8 T1

26
Q

abductor digiti minimi action

A
  • abducts 5th finger

- assists in flexion of its proximal phalanx

27
Q

flexor digiti minimi brevis proximal attachment origin

A

hook of hamate and flexor retinaculum

28
Q

flexor digiti minimi brevis distal attachment insetion

A

medial side of base of proximal phalanx of 5th finger

29
Q

flexor digiti minimi brevis innervation

A

deep branch of ulnar nerve C8 T1

30
Q

flexor digiti minimi brevis action

A

flexes proximal phalanx of 5th finger

31
Q

opponens digiti minimi proximal attachment origin

A

hook of hamate and flexor retinaculum

32
Q

opponens digiti minimi distal attachment insertion

A

medial border of 5th metacarpal

33
Q

opponens digiti minimi innervtion

A

deep branch of ulnar nerve C8 T1

34
Q

opponens digiti minimi action

A

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

35
Q

short muscles of hand

A
  • lumbrical 1,2,3,4
  • dorsal interossei 1-4
  • palmar interossei 1-3
36
Q

lumbricals 1 and 2 proximal attachment origin

A

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

37
Q

lumbricals 1 and 2 distal attachment insertion

A

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

38
Q

lumbricals 1 and 2 innervation

A

median nerve C8 T1

39
Q

lumbricals 1 and 2 action

A
  • flex metacarpophalangeal joints

- extend interphalangeal joints of 2nd - 5th fingers

40
Q

lumbricals 3 and 4 proximal attachment origin

A

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

41
Q

lumbricals 3 and 4 distal ttachment insertion

A

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

42
Q

lumbricals 3 and 4 innervation

A

deep branch of ulnar nerve C8 T1

43
Q

lumbricals 3 and 4 action

A
  • flex metacarpophalangeal joints

- extend interphalangeal joints of 2nd - 5th fingers

44
Q

dorsal interossei 1-4 proximal attachment origin

A

adjacent sides of two metacarpals (as bipennate muscles)

45
Q

dorsal interossei 1-4 distal attachment insertion

A
  • base of proximal phalanges

- extensor expansions of 2nd -4th fingers

46
Q

dorsal interossei 1-4 innervation

A

deep branch of ulnar nerve C8 T1

47
Q

dorsal interossei 1-4 action

A
  • abduct 2nd -4th fingers from axial line

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

48
Q

palmar interossei 1-3 proximal attachment origin

A

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

49
Q

palmar interossei 1-3 distal attachment insertion

A
  • bases of proximal phalanges

- extensor expansions of 2nd 4th and 5th fingers

50
Q

palmar interossei 1-3 innervation

A

deep branch of ulnar nerve C8 T1

51
Q

palmar interossei 1-3 action

A
  • adduct 2nd 4th and 5th fingers towards axial line

- assist lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints

Gross Anatomy (20 decks)

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