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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

24
Q

abductor digiti minimi istal attachment insertion

A

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

Gross Anatomy (20 decks)

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