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Anatomy > upper limb muscles > Flashcards

upper limb muscles Flashcards

1
Q

abductor pollicis longus origin

A

posterior surface of upper and middle radius and intervening interosseous membrane

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2
Q

abductor pollicis longus insertion

A

radial side of base of metacarpal 1

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3
Q

abductor pollicis longus action

A

abduction of 1st CMC
assists extension of 1st CMC
assists abduction of the wrist

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4
Q

abductor pollicis longus innervation

A

posterior interosseous nerve

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5
Q

anconeus origin

A

lateral epicondyle of humerus (common extensor origin)

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6
Q

anconeus insertion

A

olecranon and upper part of ulnar shaft

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7
Q

anconeus action

A

extends the elbow

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8
Q

anconeus innervation

A

radial nerve

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9
Q

brachialis origin

A

distal 1/2 of shaft of humerus

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10
Q

brachialis insertion

A

ulna tuberosity

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11
Q

brachialis action

A

main flexor of elbow joint

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12
Q

brachialis innervation

A

musculocutaneous nerve

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13
Q

brachioradialis origin

A

common flexor tendon

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14
Q

brachioradialis insertion

A

lateral surface of radius proximal to radial styloid

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15
Q

brachioradialis action

A

flexes the elbow when forearm is in mid-prone
returns forearm to mid-prone from full extremities of pronation or supination

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16
Q

brachioradialis innervation

A

radial nerve

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17
Q

biceps brachii origin

A

short head = coracoid process
long head = supraglenoid tubercle

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18
Q

biceps brachii insertion

A

radial tuberosity

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19
Q

biceps brachii actions

A

flexion of elbow/shoulder joint
supination of radio-ulnar joint

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20
Q

biceps brachii innervation

A

musculocutaneous nerve

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21
Q

coracobrachialis origin

A

coracoid process

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22
Q

coracobrachialis insertion

A

mid-shaft of humerus

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23
Q

coracobrachialis actions

A

weak adductor and flexor of arm

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24
Q

coracobrachialis innervation

A

musculocutaneous nerve

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25
Q

deltoid origin

A

anterior = lateral 1/3 clavicle
posterior = spine of scapula
middle = acromion

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26
Q

deltoid insertion

A

mid-shaft humerus

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27
Q

deltoid actions

A

anterior = flexion and MR
posterior = extension and LR
middle = abduction

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28
Q

deltoid innervation

A

axillary nerve

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29
Q

extensor carpi radialis brevis origin

A

common extensor tendon

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30
Q

extensor carpi radialis brevis insertion

A

posterior surface of base of metacarpal 3

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31
Q

extensor carpi radialis brevis actions

A

extension and abduction at wrist

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32
Q

extensor carpi radialis brevis innervation

A

posterior interosseous nerve

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33
Q

extensor carpi radialis longus origin

A

lateral supracondylar ridge of humerus

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34
Q

extensor carpi radialis longus insertion

A

posterior surface of base of metacarpal 2

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35
Q

extensor carpi radialis longus action

A

extension and abduction at wrist

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36
Q

extensor carpi radialis longus innervation

A

radial nerve

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37
Q

extensor carpi ulnaris origin

A

aponeurosis from posterior border of ulna

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38
Q

extensor carpi ulnaris insertion

A

medial side of base of metacarpal 5

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39
Q

extensor carpi ulnaris action

A

extension and adduction at wrist

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40
Q

extensor carpi ulnaris innervation

A

posterior interosseous nerve

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41
Q

abductor digiti minimi origin

A

pisiform, pisohamate, pisometacarpal ligaments, tendon FCU

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42
Q

abductor digiti minimi insertion

A

ulnar side proximal phalnx of little finger and dorsal digital expansion

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43
Q

abductor digiti minimi action

A

abduction of little finger
flexion of MCP

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44
Q

abductor digiti minimi innervation

A

ulnar nerve

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45
Q

abductor pollicis brevis origin

A

flexor retinaculum, scaphoid, trapezium

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46
Q

abductor pollicis brevis insertion

A

radial side of the base of the proximal phalanx of the thumb

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47
Q

abductor pollicis brevis action

A

abduction of the CMC, MCP joint of the thumb

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48
Q

abductor pollicis brevis innervation

A

median nerve

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49
Q

adductor pollicis origin

A

oblique head = scaphoid, trapezoid, tendon FCR, bases of metacarpals 2-3
transverse head = anterior surface shaft of the 3rd metacarpal

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50
Q

adductor pollicis insertion

A

medial side of base of proximal phalanx of thumb

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51
Q

adductor pollicis action

A

strong adductor

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52
Q

adductor pollicis innervation

A

ulnar nerve

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53
Q

extensor digiti minimi origin

A

common extensor tendon

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54
Q

extensor digiti minimi insertion

A

dorsal digital expansion of digit 5

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55
Q

extensor digiti minimi action

A

extension of 5th MCP
assists extension of IP joints
extension of wrist

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56
Q

extensor digiti minimi innervation

A

posterior interosseous nerve

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57
Q

extensor digitorum origin

A

common extensor tendon

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58
Q

extensor digitorum insertion

A

bases of middle and distal phalanges ( dorsal digital expansion)

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59
Q

extensor digitorum actions

A

extension of the MCP joints of each finger
assists extension of the IP joints

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60
Q

extensor digitorum innervation

A

posterior interosseous nerve

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61
Q

extensor indicis origin

A

posterior surface of distal ulna and interosseous membrane

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62
Q

extensor indicis insertion

A

dorsal digital expansion of index finger

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63
Q

extensor indicis action

A

extension of 2nd MCP and IP

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64
Q

extensor indicis innervation

A

posterior interosseous nerve

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65
Q

extensor pollicis brevis origin

A

posterior surface of middle ulna and interosseous membrane

66
Q

extensor pollicis brevis insertion

A

dorsal surface of base of proximal phalanx of the thumb

67
Q

extensor pollicis brevis action

A

extension of the thumb at MCP and CMC

68
Q

extensor pollicis brevis innervation

A

posterior interosseous nerve

69
Q

extensor pollicis longus origin

A

posterior surface of middle 1/3 of ulna and interosseous membrane

70
Q

extensor pollicis longus insertion

A

dorsal surface of base of distal phalanx of the thumb

71
Q

extensor pollicis longus action

A

extension of IP joints of thumb
assists extension at MCP, CMC and wrist

72
Q

extensor pollicis longus innervation

A

posterior interosseous nerve

73
Q

flexor carpi ulnaris origin

A

common flexor tendon
medial border of olecranon and posterior border of ulna

74
Q

flexor carpi ulnaris insertion

A

pisiform, hook of hamate, base of 5th metacarpal

75
Q

flexor carpi ulnaris action

A

flexion and adduction at wrist
synergic action in abduction of digit 5

76
Q

flexor carpi ulnaris innervation

A

ulnar nerve

77
Q

flexor carpi radialis origin

A

common flexor tendon

78
Q

flexor carpi radialis insertion

A

palmar surface of base of metacarpals 2 and 3

79
Q

flexor carpi radialis action

A

flexion and abduction at wrist

80
Q

flexor carpi radialis innervation

A

median nerve

81
Q

flexor digitorum profundus origin

A

medial side coronoid process, anterior and middle surfaces of ulna and interosseous membrane

82
Q

flexor digitorum profundus insertion

A

4 tendons to base of palmar surface of distal phalanx of each finger

83
Q

flexor digitorum profundus action

A

flexion of DIP, PIP and MCP joints of finger
flexion at wrist

84
Q

flexor digitorum profundus innervation

A

ulnar nerve
anterior interosseous nerve

85
Q

flexor digitorum superficialis origin

A

common flexor origin and coronoid process of ulna
proximal 2/3 anterior border of radius

86
Q

flexor digitorum superficialis insertion

A

4 tendons to either side palmar surface of middle phalanx of each finger

87
Q

flexor digitorum superficialis action

A

flexion at wrist, MCP, PIP

88
Q

flexor digitorum superficialis innervation

A

median nerve

89
Q

flexor pollicis longus origin

A

anterior surface of radius and adjacent interosseous membrane

90
Q

flexor pollicis longus insertion

A

palmar surface base of distal phalanx of the thumb

91
Q

flexor pollicis longus action

A

flexion at CMC, MCP and Ip joints of thumb

92
Q

flexor pollicis longus innervation

A

anterior interosseous nerve

93
Q

infraspinatus origin

A

infraspinous fossa of scapula

94
Q

infraspinatus insertion

A

middle facet on greater tubercle of humerus

95
Q

infraspinatus action

A

lateral rotation and adduction of arm

96
Q

infraspinatus innervation

A

subscapular nerve

97
Q

latissimus dorsi origin

A

iliac crest
thoracolumbar fascia from SP T6-12 and all lumbar and sacral vertebrae
lower 4 ribs and inferior angle of scapula

98
Q

latissimus dorsi insertion

A

floor of intertubercular groove

99
Q

latissimus dorsi actions

A

extension, medial rotation and adduction of humerus

100
Q

latissimus dorsi innervation

A

thorocodorsal nerve

101
Q

levator scapulae origin

A

TP C1-4

102
Q

levator scapulae insertion

A

superior portion of the medial border of the scapula

103
Q

levator scapulae action

A

elevates, MR scapula

104
Q

levator scapulae innervation

A

dorsal scapula nerve

105
Q

opponens digiti minimi origin

A

flexor retinaculum
hook of hamate

106
Q

opponens digiti minimi insertion

A

shaft of 5th metacarpal

107
Q

opponens digiti minimi action

A

opposition of digit 5

108
Q

opponens digiti minimi innervation

A

ulnar nerve

109
Q

opponens pollicis origin

A

flexor retinaculum
trapezium

110
Q

opponens pollicis insertion

A

whole length of lateral half of anterior surface of first metacarpal

111
Q

opponens pollicis action

A

opposition

112
Q

opponens pollicis innervation

A

median nerve

113
Q

palmaris brevis origin

A

flexor retinaculum and palmar aponeurosis

114
Q

palmaris brevis insertion

A

skin of palm into dermis

115
Q

palmaris brevis action

A

steadies and corrugates skin of palm to help with grip

116
Q

palmaris brevis innervation

A

ulnar nerve

117
Q

palmaris longus origin

A

common flexor tendon

118
Q

palmaris longus insertion

A

flexor retinaculum and palmar aponeurosis

119
Q

palmaris longus action

A

weak wrist flexion
tightens palmar fascia

120
Q

pectoralis major origin

A

medial 1/3 of the anterior aspect of the clavicle
Manubrium and sternum and onto costal cartilages

121
Q
A
122
Q

pectoralis major insertion

A

lateral lip of the intertubercular groove

123
Q

pectoralis major innervation

A

medial and lateral pectoral nerves

124
Q

pectoralis major action

A

flexion, extension, adduction and medial rotation of humerus

125
Q

pectoralis minor origin

A

ribs 3,4 and 5 and their costal cartilages

126
Q

pectoralis minor insertion

A

coracoid process of scapula

127
Q

pectoralis minor action

A

protracts and medially rotates scapula

128
Q

pectoralis minor innervation

A

pectoral nerve

129
Q

subscapularis origin

A

subscapular fossa

130
Q

subscapularis insertion

A

lesser tubercle of humerus

131
Q

subscapularis action

A

medial rotation of arm

132
Q

subscapularis innervation

A

subscapular nerve

133
Q

teres major origin

A

inferior angle of scapula

134
Q

teres major insertion

A

medial lip of intertubercular groove

135
Q

teres major action

A

adduction and medial rotation of arm
assists extension of flexed arm

136
Q

teres major innervation

A

lower scapular nerve

137
Q

pronator quadratus origin

A

anterior 1/4 of distal radius

138
Q

pronator quadratus insertion

A

anterior 1/4 of distal ulna

139
Q

pronator quadratus action

A

pronates forearm

140
Q

pronator quadratus innervation

A

anterior interosseous nerve

141
Q

pronator teres origin

A

common flexor origin

142
Q

pronator teres insertion

A

middle of lateral surface of radius

143
Q

pronator teres action

A

pronates forearm
assists elbow flexion

144
Q

pronator teres innervation

A

median nerve

145
Q

rhomboids origin

A

C7 and T1 spinous process and supraspinous ligament
T2-5

146
Q

rhomboids insertion

A

medial border of spine of scapula
medial border inferior to the spine of the scapula

147
Q

rhomboids action

A

retraction and medial rotation of scapula

148
Q

rhomboids innervation

A

dorsal scapula nerve

149
Q

subclavius origin

A

costochondral junction of 1st rib

150
Q

subclavius insertion

A

inferior surface of the clavicle

151
Q

subclavius action

A

steadies the clavicle

152
Q

subclavius innervation

A

subclavian nerve

153
Q

supinator origin

A

lateral epicondyle of humerus
radial collateral and annular ligaments
crest of ulna
supinator fossa

154
Q

supinator insertion

A

lateral, posterior and anterior surface of proximal 1/3 of radius

155
Q

supinator action

A

supinates forearm

156
Q

supinator innervation

A

radial nerve

157
Q

supraspinatus origin

A

supraspinous fossa

158
Q

supraspinatus insertion

A

uppermost facet on greater tubercle of humerus

159
Q

supraspinatus action

A

assists abduction, initiating first 20 degrees

160
Q

supraspinatus innervation

A

suprascapular nerve

Anatomy (15 decks)

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