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Musculoskeletal System > Muscles > Flashcards

Muscles Flashcards

0
Q

What is the innervation of biceps brachii?

A

Musculocutaneous nerve

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1
Q

What are the attachments of biceps brachii?

A

Proximal : short head - tip of coracoid process
long head - supraglenoid tubercle of scapular

Distal : tuberosity of radius and fascia of forearm

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2
Q

What is the action of biceps brachii?

A

Supinates forearm

Flexes forearm

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3
Q

What is the innervation of caracobrachialis?

A

Musculocutaneous

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4
Q

What is the action of caracobrachialis?

A

Flex and adducts the arm

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5
Q

What is the innervation of brachialis?

A

Musculocutaneous nerve

And partially radial nerve

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6
Q

What is the innervation of triceps brachii?

A

Radial nerve

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7
Q

What is the action of triceps brachii?

A

Extends forearm

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8
Q

What is the innervation of anconeus?

A

Radial nerve

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9
Q

What is the action of anconeus?

A

Assists triceps in extending forearm

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10
Q

What is the innervation of pronator teres?

A

Median nerve

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11
Q

What is the action of pronator teres?

A

Pronator and flexes forearm

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12
Q

What is the innervation of flexor carpi radialis?

A

Median nerve

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13
Q

What is the action of flexor carpi radialis?

A

Flexes hand

Radial deviates the wrist

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14
Q

What is the innervation of palmaris longus?

A

Median nerve

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15
Q

What is the action of palmaris longus?

A

Flexes hand

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16
Q

What is the innervation of flexor carpi ulnaris?

A

Ulnar nerve

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17
Q

What is the action of flexor carpi ulnaris?

A

Flexes hand

Ulnar deviates wrist

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18
Q

What is the innervation of flexor digitorum superficialis?

A

Median nerve

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19
Q

What is the action of flexor digitorum superficialis?

A

Flexes the fingers at the middle phalanges

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20
Q

What is the innervation of flexor digitorum profundus?

A

Medial half - ulnar nerve

Lateral half - median nerve

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21
Q

What is the action of flexor digitorum profundus?

A

Flexes the fingers at the distal interphalangeal joints

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22
Q

What is the innervation of flexor pollicis longus?

A

Median nerve

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23
Q

What is the action of flexor pollicis longus?

A

Flexes thumb

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24
Q

What is the innervation of pronator quadratus?

A

Median nerve

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25
Q

What is the action of pronator quadratus?

A

Pronates forearm

Binds radius and ulna together

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26
Q

What is the innervation of brachioradialis?

A

Radial nerve

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27
Q

What is the action of brachioradialis?

A

Weak flexion of the forearm

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28
Q

What is the innervation of extensor carpi radialis longus?

A

Radial

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29
Q

What is the innervation of extensor carpi radialis brevis?

A

Radial

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30
Q

What is the innervation of extensor digitorum?

A

Radial

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31
Q

What isa the innervation of extensor digiti minimi?

A

Radial

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32
Q

What is the innervation of extensor carpi ulnaris?

A

Radial

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33
Q

What is the innervation of supinator?

A

Radial nerve

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34
Q

What is the innervation of abductor pollicis longus?

A

Radial

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35
Q

What is the innervation of extensor pollicis brevis?

A

Radial

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36
Q

What is the innervation of extensor pollicis longus?

A

Radial

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37
Q

What is the innervation of extensor indicis?

A

Radial

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38
Q

What is the innervation of pectoralis major?

A

Medial and lateral pectoral nerves

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39
Q

What is the action of pectoralis major?

A

Addiction of arm
Internal rotation of arm
Flexion of arm

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40
Q

What is the innervation of pectoralis minor?

A

Medial pectoral nerve

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41
Q

What is the action of pectoralis minor?

A

Pulls scapula medially, anteriorly and inferiorly

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42
Q

What is the innervation of subclavius?

A

Subclavian nerve

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43
Q

What is the action of subclavius?

A

Draws clavicle anteriorly and inferiorally

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44
Q

What is the innervation of serrated anterior?

A

Long thoracic nerve

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45
Q

What is the action of serratus anterior?

A

Protracts and rotates scapula

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46
Q

What is the innervation of Trapezius?

A

Accessory nerve

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47
Q

What is the action of trapezius?

A

Superior part - Elevates scapula
Middle part - Retracts scapula
Inferior part - Depresses scapula

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48
Q

What is the innervation of latissimus dorsi?

A

Thoraco dorsal nerve

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49
Q

What is the action of latissimus dorsi?

A

Adducts humerus
Extends arm
Medially rotates humerus

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50
Q

What is the innervation of rhomboids major and minor?

A

Dorsal scapular nerve

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51
Q

What is the action of rhomboids major and minor?

A

Retracts scapula

Rotates scapula

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52
Q

What is the action of levator scaupulae?

A

Elevates scapula

Rotates scapula

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53
Q

What is the innervation of deltoid?

A

Axillary nerve

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54
Q

What is the action of deltoid?

A

Anterior fibres - Flexion of arm
Middle fibres - abducts arm
Posterior fibres - extends arm

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55
Q

What is the innervation of teres major?

A

Subscapular nerve

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56
Q

What is the action of teres major?

A

Adducts arm

Medially rotates arm

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57
Q

What is the innervation of supraspinatus?

A

Suprascapular nerve

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58
Q

What is the action of supraspinatus?

A

Initiation and 0-15 degrees of abduction

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59
Q

What is the innervation of infraspinatus?

A

Suprascapular nerve

60
Q

What is the action of infraspinatus?

A

Lateral rotation of the arm

61
Q

What is the innervation of teres minor?

A

Axillary nerve

62
Q

What is the action of teres minor?

A

Lateral rotation of the arm

Weak adductor

63
Q

What is the innervation of subscapularis?

A

Upper and lower subscapular nerves

64
Q

What is the action of subscapularis?

A

Medial rotation of the arm

65
Q

What is the innervation of flexor pollicis brevis?

A

Median nerve

66
Q

What is the innervation of abductor pollicis brevis?

A

Median nerve

67
Q

What is the innervation of opponens pollicis?

A

Median nerve

68
Q

Name the three hypothenar muscles

A

Flexor digiti minimi brevis
Abductor digiti minimi
Opponens digiti minimi

69
Q

What is the innervation the the hypothenar muscles?

A

Ulnar nerve

70
Q

What is the innervation of the lumbricals?

A

Medial lumbricals - ulnar nerve

Lateral lumbricals - median nerve

71
Q

What is the action of the lumbricals?

A

Flex at the MCP

Extend the IP joints

72
Q

What is the innervation of the dorsal interossei muscles?

A

Ulnar nerve

73
Q

What is the action of the dorsal interossei?

A

Abducts the fingers

74
Q

What is the innervation of palmar interossei?

A

Ulnar nerve

75
Q

What is the action of palmar interossei?

A

Adducts fingers

76
Q

What is the innervation and action of palmaris brevis?

A

Ulnar nerve

Wrinkles the skin to improve grip

77
Q

What is the innervation and action of adductor pollicis?

A

Ulnar nerve

Adducts thumb

78
Q

What are the attachments of the flexor retinaculum?

A

Medially - Pisiform and the hook of hamate

Laterally - scaphoid and trapezium

79
Q

What is the innervation of pectineus?

A

Femoral nerve

80
Q

What is the action of pectineus

A

Adducts thigh
Flexes thigh
Medially rotates thigh

81
Q

What is the innervation of Psoas Minor and Major?

A

Anterior rami of lumbar nerves

82
Q

What is the action of Psoas Major and Minor?

A

Flex thigh

83
Q

What is the innervation of iliacus?

A

Femoral nerve

84
Q

What is the action of iliacus?

A

Flex thigh

85
Q

What is the innervation of sartorius?

A

Femoral nerve

86
Q

What is the innervation of rectus femoris?

A

Femoral nerve

87
Q

What is the action of rectus femoris?

A

Extend the leg at the knee

88
Q

What is the innervation of vastus lateralis?

A

Femoral nerve

89
Q

What is the action of vastus lateralis?

A

Extend the leg at the knee

90
Q

What is the innervation of vastus medialis?

A

Femoral nerve

91
Q

What is the action of vastus medialis?

A

Extend the leg at the knee

92
Q

What is the innervation of vastus intermedius?

A

Femoral nerve

93
Q

What is the action of vastus intermedius?

A

Extend the leg at the knee

94
Q

What is the innervation of obturator externus?

A

Obturator

95
Q

What is the action of obturator externus?

A

Laterally rotates thigh

96
Q

What is the innervation of adductor brevis?

A

Obturator nerve

97
Q

What is the action of adductor brevis?

A

Adducts thigh

98
Q

What is the innervation of adductor longus?

A

Obturator

99
Q

What is the action of adductor longus?

A

Adducts thigh

100
Q

What is the innervation of gracilis?

A

Obturator

101
Q

What is the action of gracilis?

A

Adducts thigh
Flexes leg
Rotates leg medially

102
Q

What is the action of adductor magnus?

A

Adducts thigh
Flexes thigh
Extends thigh

103
Q

What is the innervation of adductor magnus?

A

Obturator

Sciatic

104
Q

What is the innervation of gluteus maximus?

A

Inferior gluteal nerve

105
Q

What is the action of gluteus maximus?

A

Extends thigh
Laterally rotates thigh
Assists with standing from sitting position

106
Q

What is the innervation of tensor fasciae latae?

A

Superior gluteal nerve

107
Q

What is the action of tensor fasciae latae?

A

Abduct thigh
Medially rotates thigh

Keeps pelvis level when walking

108
Q

What is the innervation of gluteus medius?

A

Superior gluteal nerve

109
Q

What is the action of gluteus medius?

A

Abduct thigh
Medially rotates thigh
Keeps pelvis level when walking

110
Q

What is the innervation of gluteus minimus?

A

Superior gluteal nerve

111
Q

What is the action of gluteus minimus?

A

Abduct and medially rotate thigh

Keeps pelvis level when walking

112
Q

What is the innervation of piriformis?

A

Branches of S1 and S2

113
Q

What is the action of piriformis?

A

Laterally rotate extended thigh

Abduct flexed thigh

114
Q

What is the innervation of obturator internus?

A

Nerve to obturator internus

115
Q

What is the action of obturator internus?

A

Laterally rotate extended thigh

Abduct flexed thigh

116
Q

What is the innervation of the superior and inferior gamelli?

A

Superior - nerve to obturator internus

Inferior - nerve to quadratus femoris

117
Q

What is the innervation of quadratus femoris?

A

Nerve to quadratus femoris

118
Q

What is the action of quadratus femoris?

A

Laterally rotates thigh

119
Q

What is the innervation of semitendinosus?

A

Tibial nerve

120
Q

What is the action of semitendinosus?

A

Extend thigh
Flex leg
Rotate leg medially

121
Q

What is the innervation of semimembranosus?

A

Tibial nerve

122
Q

What is the action of semimembranosus?

A

Extend thigh
Flex leg
Rotate leg medially

123
Q

What is the innervation of biceps femoris?

A

Long head - Tibial nerve

Short head - Common fibular nerve

124
Q

What is the action of biceps femoris?

A

Flexes leg
Rotates thigh laterally
Extends thigh

125
Q

What is the innervation of tibialis anterior?

A

Deep fibular nerve

126
Q

What is the action of tibialis anterior?

A

Dorsiflexion of the ankle

Inverts foot

127
Q

What is the innervation of extensor digitorum longus?

A

Deep fibular nerve

128
Q

What is the action of extensor digitorum longus?

A

Extends digits of the foot

Dorsiflexion of ankle

129
Q

What is the innervation of extensor hallucis longus?

A

Deep fibular nerve

130
Q

What is the action of extensor hallucis longus?

A

Extends great toe

Dorsiflexion of ankle

131
Q

What is the innervation of fibularis brevis?

A

Superficial fibular nerve

132
Q

What is the action of fibularis brevis?

A

Everts foot

133
Q

What is the innervation of fibularis longus?

A

Superficial fibular nerve

134
Q

What is the action of fibularis longus?

A

Everts foot

135
Q

What is the innervation of gastrocnemius?

A

Tibial nerve

136
Q

What is the action of gastrocnemius?

A

Plantarflexion of ankle

Flexion of knee

137
Q

What is the innervation of soleus?

A

Tibial nerve

138
Q

What is the action of soleus?

A

Plantarflexion at ankle

139
Q

What is the innervation of plantaris?

A

Tibial nerve

140
Q

What is the action of plantaris?

A

Assists in plantarflexion of ankle

141
Q

What is the innervation of popliteus?

A

Tibial nerve

142
Q

What is the action of popliteus?

A

Laterally rotates the femur, unlocking the knee joint allowing it to be flexed

143
Q

What is the innervation of tibialis posterior?

A

Tibial nerve

144
Q

What is the action of tibialis posterior?

A

Plantarflexion of ankle

Inverts foot

145
Q

What is the innervation of flexor hallucis longus?

A

Tibial nerve

146
Q

What is the action of flexor hallucis longus?

A

Flexes big toe

Plantarflexion of the ankle

147
Q

What is the innervation of flexor digitorum longus?

A

Tibial nerve

148
Q

What is the action of flexor digitorum longus?

A

Flexes lateral 4 digits

Plantarflexes ankle

Musculoskeletal System (7 decks)

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