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Anatomy 2 > Wrist, Palmar Hand Muscles > Flashcards

Wrist, Palmar Hand Muscles Flashcards

OINAs (64 cards)

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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
Flexor Pollicis Brevis Action
- flex thumb (CMC and MCP joints) - assist in opposition of thumb
26
Flexor Pollicis Brevis PA
flexor retinaculum, tubercles of scaphoid and trapezium
27
Flexor Pollicis Brevis DA
base of proximal phalanx of thumb
28
Flexor Pollicis Brevis Innervation
- superficial head: median nerve (recurrent branch) (C8, T1) - deep head: ulnar nerve (deep branch) (C8, T1)
29
Abductor Pollicis Brevis Action
- abduct thumb (CMC and MCP joint) - assist in opposition of thumb
30
Abductor Pollicis Brevis PA
flexor retinaculum, tubercles of scaphoid and trapezium
31
Abductor Pollicis Brevis DA
base of proximal phalanx of thumb
32
Abductor Pollicis Brevis Innervation
median nerve (recurrent) (C8, T1)
33
Opponens Pollicis Action
oppose thumb ... draws 1st metacarpal medially to center of palm and rotates it medially
34
Opponens Pollicis PA
flexor retinaculum, tubercles of scaphoid and trapezium
35
Opponens Pollicis DA
1st metacarpal
36
Opponens Pollicis Innervation
median nerve (recurrent branch) (C8, T1)
37
Flexor Digiti Minimi Action
flex 5th digit proximal phalanx
38
Flexor Digiti Minimi PA
hook of hamate, flexor retinaculum
39
Flexor Digiti Minimi DA
base of proximal phalanx of 5th digit
40
Flexor Digiti Minimi Innervation
ulnar nerve (deep branch) (C8, T1)
41
Abductor Digiti Minimi Action
abduct 5th finger (MCP joint)
42
Abductor Digiti Minimi PA
pisiform
43
Abductor Digiti Minimi DA
base of proximal phalanx of 5th digit
44
Abductor Digiti Minimi Innervation
ulnar nerve (deep branch) (C8, T1)
45
Opponens Digiti Minimi Action
opposition of 5th finger at CMC joint
46
Opponens Digiti Minimi PA
hook of hamate, flexor retinaculum
47
Opponens Digiti Minimi DA
medial border of 5th metacarpal
48
Opponens Digiti Minimi Innervation
ulnar nerve (deep branch) (C8, T1)
49
Adductor Pollicis Action
adducts thumb toward lateral border of palm
50
Adductor Pollicis PA
- oblique: bases of 2nd and 3rd metacarpals, capitate, and adjacent carpals - transverse: shaft of 3rd metacarpal
51
Adductor Pollicis DA
base of proximal phalanx of thumb
52
Adductor Pollicis Innervation
ulnar nerve (deep branch) (C8, T1)
53
Lumbricals Action
- flex MCP joints - extend IP joints of 2nd-5th digits
54
Lumbricals PA
- 1st and 2nd: lateral two tendons of flexor digitorum profundus (unipennate) - 3rd and 4th: medial three tendons of flexor digitorum profundus (bipennate)
55
Lumbricals DA
radial sides of extensor expansions of 2nd-5th digits
56
Lumbricals Innervation
- 1st and 2nd: median nerve (digital branch) (C8, T1) - 3rd and 4th: ulnar nerve (deep branch) (C8, T1)
57
Palmar Interossei Action
- adduct 2nd, 4th, and 5th digits toward axial line - assist lumbricals in flexing MCP and extending IP joints
58
Palmar Interossei PA
palmar surfaces of 2nd, 4th, and 5th metacarpals (unipennate)
59
Palmar Interossei DA
bases of proximal phalanges; extensor expansions of 2nd, 4th, and 5th digits
60
Palmar Interossei Innervation
ulnar nerve (deep branch) (C8, T1)
61
Dorsal Interossei Action
- abduct 2nd-4th digits from axial line - act w/ lumbricals in flexing MCP and extending IP joints
62
Dorsal Interossei PA
adjacent sides of two metacarpals (bipennate)
63
Dorsal Interossei DA
bases of proximal phalanges; extensor expansions of 2nd-4th digits
64
Dorsal Interossei Innervation
ulnar nerve (deep branch) (C8, T1)

Anatomy 2 (11 decks)

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