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AAA MSK anatomy > forearm - insertion, action, innervation > Flashcards

forearm - insertion, action, innervation Flashcards

1
Q

Pronator teres - proximal origin

A

Coronoid process of ulna

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2
Q

Pronator teres - distal insertion

A

lateral surface of radius

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3
Q

Pronator teres - action

A
  • Pronation (with pronator quadratus)
  • Flexion of elbow
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4
Q

Pronator teres - innervation

A

Median nerve (C6, C7)

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5
Q

pronator quadratus - proximal origin

A

Distal ¼ of anterior surface of ulna

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6
Q

pronator quadratus - distal insertion

A

distal ¼ of anterior surface of radius

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7
Q

pronator quadratus - action

A

Pronation (with pronator teres)

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8
Q

pronator quadratus - innervation

A

Anterior interosseous nerve (median nerve)

(C8, T1)

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9
Q

flexor carpi radialis - proximal origin

A

Medial epicondyle of humerus

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10
Q

flexor carpi radialis - distal insertion

A

base of 2nd (3rd ) metacarpal

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11
Q

flexor carpi radialis - action

A

Abduction (radial deviation)

Flexion

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12
Q

flexor carpi radialis - innervation

A

Median nerve
(C6, C7)

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13
Q

palmaris longus - proximal origin

A

Medial epicondyle of humerus

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14
Q

palmaris longus - distal insertion

A

flexor retinaculum, palmar aponeurosis

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15
Q

palmaris longus - action

A
  • Flexion
  • Tenses palmar aponeurosis
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16
Q

palmaris longus - innervation

A

Median nerve

(C7, C8)

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17
Q

flexor carpi ulnaris - proximal origin

A

Olecranon, posterior border of ulna

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18
Q

flexor carpi ulnaris - distal insertion

A

pisiform, hook of hamate, 5th metacarpal

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19
Q

flexor carpi ulnaris - action

A
  • Adduction (ulnar deviation)
  • Flexion
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20
Q

flexor carpi ulnaris - innervation

A

Ulnar nerve
(C7, C8)

Ulnar nerve passes between heads of FCU and FDP
Medial to ulnar artery

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21
Q

flexor digitorum superficialis - proximal origin

A

Medial epicondyle, coronoid process

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22
Q

flexor digitorum superficialis - distal insertion

A

2-5 middle phalanges

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23
Q

flexor digitorum superficialis - action

A

Flexion of wrist
MCP and proximal IP joints

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24
Q

flexor digitorum superficialis - innervation

A

Median nerve

(C7, C8, T1)

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25
Q

flexor digitorum profundus - proximal origin

A

Proximal ¾ of med. ulna

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26
Q

flexor digitorum profundus - distal insertion

A

bases of distal phalanges 2-5 digits

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27
Q

flexor digitorum profundus - action

A

Flexion of wrist and all IP joints

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28
Q

flexor digitorum profundus - innervation

A

Medial half: ulnar nerve
Lateral half: median nerve (C8, T1)

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29
Q

Flexor pollicis longus - proximal origin

A

Ant. Surface of radius

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30
Q

Flexor pollicis longus - distal insertion

A

base of distal phalanx of thumb

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31
Q

Flexor pollicis longus - action

A

Flexion of wrist and MCP, IP joints of thumb

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32
Q

Flexor pollicis longus - innervation

A

Anterior interosseous nerve (median nerve)
(C8, T1)

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33
Q

supinator - proximal origin

A

Common extensor origin

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34
Q

supinator - distal insertion

A

proximal 1/3 radius

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35
Q

supinator - action

A

supination

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36
Q

supinator - innervation

A

Deep branch of radial nerve (C7, C8)

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37
Q

brachioradialis - proximal origin

A

Supra-epicondylar ridge of humerus

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38
Q

brachioradialis - distal insertion

A

distal end of radius, styloid process

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39
Q

brachioradialis - action

A

Flexion of forearm (maximal when forearm midpronated)

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40
Q

brachioradialis - innervation

A

Radial nerve
(C5,C6, C7)

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41
Q

extensor carpi radialis longus - proximal origin

A

Supra-epicondylar ridge of humerus

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42
Q

extensor carpi radialis longus - distal insertion

A

base of second metacarpal (dorsal)

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43
Q

extensor carpi radialis longus - action

A

Abduction (radial deviation with FCR)
Extension
-of wrist

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44
Q

extensor carpi radialis longus - innervation

A

Radial nerve

(C6, C7)

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45
Q

extensor carpi radialis brevis - proximal origin

A

Common extensor origin

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46
Q

extensor carpi radialis brevis - distal insertion

A

base of 3rd metacarpal (dorsal)

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47
Q

extensor carpi radialis brevis - action

A

Abduction (radial deviation with FCR)
Extension
-of wrist

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48
Q

extensor carpi radialis brevis - innervation

A

Radial nerve – Deep branch
(C7, C8)

49
Q

extensor carpi ulnaris - proximal origin

A

common extensor origin

50
Q

extensor carpi ulnaris - distal insertion

A

base of 5th metacarpal (dorsal)

51
Q

extensor carpi ulnaris - action

A

extends and adducts wrist joint (ulnar deviation)

52
Q

extensor carpi ulnaris - innervation

A

Posterior interosseous nerve – deep radial nerve
(C7, C8)

53
Q

Extensor digitorum - proximal origin

A

common extensor origin

54
Q

Extensor digitorum - distal insertion

A

medial 4 digits

55
Q

Extensor digitorum - action

A

extension of 4 digits

56
Q

Extensor digitorum - innervation

A

posterior interosseous nerve – deep radial nerve
(C7, C8)

57
Q

Extensor digiti minimi - proximal origin

A

common extensor origin

58
Q

Extensor digiti minimi - distal insertion

A

5th finger

59
Q

Extensor digiti minimi - action

A

Extension of 5th digit

60
Q

Extensor digiti minimi - innervation

A

Posterior interosseous nerve – deep radial nerve
(C7, C8)

61
Q

Extensor indicis - proximal origin

A

Distal 1/3 ulna

62
Q

Extensor indicis - distal insertion

A

2nd finger (index finger)

63
Q

Extensor indicis - action

A

Extension of index finger

64
Q

Extensor indicis - innervation

A

Posterior interosseous nerve – deep radial nerve
(C7, C8)

65
Q

Abductor pollicis longus - proximal origin

A

Proximal halves of ulna, radius

66
Q

Abductor pollicis longus - distal insertion

A

base of 1st metacarpal

67
Q

Abductor pollicis longus - action

A

Extension of wrist joint
Abduction and extension of thumb

68
Q

Abductor pollicis longus - innervation

A

Posterior interosseous nerve – deep radial nerve
(C7, C8)

69
Q

Extensor pollicis brevis - proximal origin

A

Distal 1/3 radius

70
Q

Extensor pollicis brevis - distal insertion

A

base of proximal phalanx of thumb

71
Q

Extensor pollicis brevis - action

A

Extension of wrist joint
Extension of proximal thumb at MTP

72
Q

Extensor pollicis brevis - innervation

A

Posterior interosseous nerve – deep radial nerve
(C7, C8)

73
Q

Extensor pollicis longus - proximal origin

A

Middle 1/3 radius

74
Q

Extensor pollicis longus - distal insertion

A

base of distal phalanx of thumb

75
Q

Extensor pollicis longus - action

A

Extension of wrist joint
Extension of distal phalanx of thumb at ITP

76
Q

Extensor pollicis longus - innervation

A

Posterior interosseous nerve – deep radial nerve
(C7, C8)

77
Q

Opponens pollicis - proximal origin

A

Flexor retinaculum, scaphoid, trapezium

78
Q

Opponens pollicis - distal insertion

A

lat. side 1st metacarpal

79
Q

Opponens pollicis - action

A

Oppose the thumb

80
Q

Opponens pollicis - innervation

A

Median nerve

81
Q

Abductor pollicis brevis - proximal origin

A

Flexor retinaculum, scaphoid, trapezium

82
Q

Abductor pollicis brevis - distal insertion

A

lat. side base of proximal phalanx of thumb

83
Q

Abductor pollicis brevis - action

A

abduct the thumb

84
Q

Abductor pollicis brevis - innervation

A

median nerve

85
Q

Flexor pollicis brevis - proximal origin

A

Flexor retinaculum, scaphoid, trapezium

86
Q

Flexor pollicis brevis - distal insertion

A

lat. side base of proximal phalanx of thumb

87
Q

Flexor pollicis brevis - action

A

flex thumb

88
Q

Flexor pollicis brevis - innervation

A

Superficial head – median nerve
Deep head - ulnar nerve

89
Q

Abductor digiti minimi - proximal origin

A

Pisiform

90
Q

Abductor digiti minimi - distal insertion

A

med. side base of prox. Phalanx 5th finger

91
Q

Abductor digiti minimi - action

A

abducts 5th finger

92
Q

Abductor digiti minimi - innervation

A

Ulnar nerve

(C8, T1)

93
Q

Flexor digiti minimi brevis - proximal origin

A

Hook of hamate

94
Q

Flexor digiti minimi brevis - distal insertion

A

med. side base of prox. Phalanx 5th finger

95
Q

Flexor digiti minimi brevis - action

A

Flexes proximal phalanx of 5th finger

96
Q

Flexor digiti minimi brevis - innervation

A

Ulnar nerve

(C8, T1)

97
Q

Opponens digiti minimi - proximal origin

A

Hook of hamate

98
Q

Opponens digiti minimi - distal insertion

A

med. border of 5th metacarpal

99
Q

Opponens digiti minimi - action

A

Oppose the 5th finger to the thumb

100
Q

Opponens digiti minimi - innervation

A

Ulnar nerve

(C8, T1)

101
Q

Lateral lumbricals - proximal origin

A

Lat. two tendons of FDP

102
Q

Lateral lumbricals - distal insertion

A

lat. extensor expansions digits

103
Q

Lateral lumbricals - action

A

Flex fingers at MCPJ and extend at ITP 2nd – 5th digits

104
Q

Lateral lumbricals - innervation

A

median nerve

105
Q

Medial lumbricals - proximal origin

A

Med. three tendons of FDP

106
Q

Medial lumbricals - distal insertion

A

lat. extensor expansions

107
Q

Medial lumbricals - innervation

A

Ulnar nerve

108
Q

Adductor pollicis - proximal origin

A

Bases of 2nd/3rd metacarpals

109
Q

Adductor pollicis - distal insertion

A

med. side base of proximal phalanx of thumb

110
Q

Adductor pollicis - action

A

adduction of thumb

111
Q

Adductor pollicis - innervation

A

ulnar nerve

112
Q

dorsal interossei - proximal origin

A

Adjacent sides of metacarpals

113
Q

dorsal interossei - distal insertion

A

base of proximal phalanges

114
Q

dorsal interossei - action

A

DAB – abduction

115
Q

dorsal interossei - innervation

A

Ulnar nerve

(C8, T1)

116
Q

palmar interossei - proximal origin

A

Palmar surface of 2-5th metacarpals

117
Q

palmar interossei - distal insertion

A

bases of proximal phalanges

118
Q

palmar interossei - action

A

PAD – adduction

119
Q

palmar interossei - innervation

A

Ulnar nerve

(C8, T1)

AAA MSK anatomy (8 decks)

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