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Anatomy 2 > Wrist, Palmar Hand Muscles > Flashcards

Wrist, Palmar Hand Muscles Flashcards

OINAs

1
Q

Flexor Carpi Radialis Action

A
  • flex wrist
  • radial deviation (abduct hand at wrist)
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2
Q

Flexor Carpi Radialis PA

A

medial epicondyle of humerus (common flexor origin)

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3
Q

Flexor Carpi Radialis DA

A

bases of 2nd and 3rd metacarpals

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4
Q

Flexor Carpi Radialis Innervation

A

median nerve (C6, C7)

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5
Q

Flexor Carpi Ulnaris Action

A
  • flex wrist
  • ulnar deviation (adduct hand at wrist)
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6
Q

Flexor Carpi Ulnaris PA

A
  • humeral head: medial epicondyle of humerus (common flexor tendon)
  • ulnar head: posterior ulna
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7
Q

Flexor Carpi Ulnaris DA

A

pisiform, hook of hamate, base of 5th metacarpal

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8
Q

Flexor Carpi Ulnaris Innervation

A

ulnar nerve (C7, C8)

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9
Q

Flexor Digitorum Superficialis Action

A
  • flexes middle phalanges at PIP joints of medial 4 digits
  • (more strongly) flexes proximal phalanges at MCP joints
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10
Q

Flexor Digitorum Superficialis PA

A
  • humero-ulnar head: medial epicondyle (common flexor origin), coronoid process
  • radial head: anterior radius
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11
Q

Flexor Digitorum Superficialis DA

A

shafts of middle phalanges of medial 4 digits

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12
Q

Flexor Digitorum Superficialis Innervation

A

median nerve (C7, C8, T1)

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13
Q

Flexor Digitorum Profundus Action

A
  • flex medial 4 digits (MCP, PIP, DIP)
  • assist to flex wrist (radiocarpal joint)
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14
Q

Flexor Digitorum Profundus PA

A

proximal ulna, interosseous membrane

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15
Q

Flexor Digitorum Profundus DA

A
  • medial part: bases of distal phalanges of digits 4-5
  • lateral part: bases of distal phalanges of digits 2-3
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16
Q

Flexor Digitorum Profundus Innervation

A
  • digits 2-3: median nerve (AIN) (C8, T1)
  • digits 4-5: ulnar nerve (C8, T1)
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17
Q

Flexor Pollicis Longus Action

A

flexes phalanges of 1st digit (thumb)

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18
Q

Flexor Pollicis Longus PA

A

anterior radius, adjacent interosseous membrane

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19
Q

Flexor Pollicis Longus DA

A

base of distal phalanx of thumb

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20
Q

Flexor Pollicis Longus Innervation

A

median nerve (AIN) (C8, T1)

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21
Q

Pronator Quadratus Action

A
  • pronate forearm
  • deep fibers bind radius and ulna together
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22
Q

Pronator Quadratus PA

A

distal ulna

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23
Q

Pronator Quadratus DA

A

distal radius

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24
Q

Pronator Quadratus Innervation

A

median nerve (AIN) (C8, T1)

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25
Q

Flexor Pollicis Brevis Action

A
  • flex thumb (CMC and MCP joints)
  • assist in opposition of thumb
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26
Q

Flexor Pollicis Brevis PA

A

flexor retinaculum, tubercles of scaphoid and trapezium

27
Q

Flexor Pollicis Brevis DA

A

base of proximal phalanx of thumb

28
Q

Flexor Pollicis Brevis Innervation

A
  • superficial head: median nerve (recurrent branch) (C8, T1)
  • deep head: ulnar nerve (deep branch) (C8, T1)
29
Q

Abductor Pollicis Brevis Action

A
  • abduct thumb (CMC and MCP joint)
  • assist in opposition of thumb
30
Q

Abductor Pollicis Brevis PA

A

flexor retinaculum, tubercles of scaphoid and trapezium

31
Q

Abductor Pollicis Brevis DA

A

base of proximal phalanx of thumb

32
Q

Abductor Pollicis Brevis Innervation

A

median nerve (recurrent) (C8, T1)

33
Q

Opponens Pollicis Action

A

oppose thumb … draws 1st metacarpal medially to center of palm and rotates it medially

34
Q

Opponens Pollicis PA

A

flexor retinaculum, tubercles of scaphoid and trapezium

35
Q

Opponens Pollicis DA

A

1st metacarpal

36
Q

Opponens Pollicis Innervation

A

median nerve (recurrent branch) (C8, T1)

37
Q

Flexor Digiti Minimi Action

A

flex 5th digit proximal phalanx

38
Q

Flexor Digiti Minimi PA

A

hook of hamate, flexor retinaculum

39
Q

Flexor Digiti Minimi DA

A

base of proximal phalanx of 5th digit

40
Q

Flexor Digiti Minimi Innervation

A

ulnar nerve (deep branch) (C8, T1)

41
Q

Abductor Digiti Minimi Action

A

abduct 5th finger (MCP joint)

42
Q

Abductor Digiti Minimi PA

43
Q

Abductor Digiti Minimi DA

A

base of proximal phalanx of 5th digit

44
Q

Abductor Digiti Minimi Innervation

A

ulnar nerve (deep branch) (C8, T1)

45
Q

Opponens Digiti Minimi Action

A

opposition of 5th finger at CMC joint

46
Q

Opponens Digiti Minimi PA

A

hook of hamate, flexor retinaculum

47
Q

Opponens Digiti Minimi DA

A

medial border of 5th metacarpal

48
Q

Opponens Digiti Minimi Innervation

A

ulnar nerve (deep branch) (C8, T1)

49
Q

Adductor Pollicis Action

A

adducts thumb toward lateral border of palm

50
Q

Adductor Pollicis PA

A
  • oblique: bases of 2nd and 3rd metacarpals, capitate, and adjacent carpals
  • transverse: shaft of 3rd metacarpal
51
Q

Adductor Pollicis DA

A

base of proximal phalanx of thumb

52
Q

Adductor Pollicis Innervation

A

ulnar nerve (deep branch) (C8, T1)

53
Q

Lumbricals Action

A
  • flex MCP joints
  • extend IP joints of 2nd-5th digits
54
Q

Lumbricals PA

A
  • 1st and 2nd: lateral two tendons of flexor digitorum profundus (unipennate)
  • 3rd and 4th: medial three tendons of flexor digitorum profundus (bipennate)
55
Q

Lumbricals DA

A

radial sides of extensor expansions of 2nd-5th digits

56
Q

Lumbricals Innervation

A
  • 1st and 2nd: median nerve (digital branch) (C8, T1)
  • 3rd and 4th: ulnar nerve (deep branch) (C8, T1)
57
Q

Palmar Interossei Action

A
  • adduct 2nd, 4th, and 5th digits toward axial line
  • assist lumbricals in flexing MCP and extending IP joints
58
Q

Palmar Interossei PA

A

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

59
Q

Palmar Interossei DA

A

bases of proximal phalanges; extensor expansions of 2nd, 4th, and 5th digits

60
Q

Palmar Interossei Innervation

A

ulnar nerve (deep branch) (C8, T1)

61
Q

Dorsal Interossei Action

A
  • abduct 2nd-4th digits from axial line
  • act w/ lumbricals in flexing MCP and extending IP joints
62
Q

Dorsal Interossei PA

A

adjacent sides of two metacarpals (bipennate)

63
Q

Dorsal Interossei DA

A

bases of proximal phalanges; extensor expansions of 2nd-4th digits

64
Q

Dorsal Interossei Innervation

A

ulnar nerve (deep branch) (C8, T1)

Anatomy 2 (11 decks)

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