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MSK Lower Limb > Lower Limb Muscles > Flashcards

Lower Limb Muscles Flashcards

1
Q

Psoas major muscle Attachments

A

Origin: Lateral vertebral bodies T12 through L5
Insertion:Lesser trochanter of femur

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2
Q

Psoas major muscle innervation

A

Anterior rami

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3
Q

Psoas Major muscle action

A

Flex thigh

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4
Q

Iliacus muscle attachments

A

Origin: superior iliac fossa
Insertion:Lesser trocanter of femur

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5
Q

Iliacus muscle innervation

A

Femoral nerve

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6
Q

Iliacus muscle action

A

Flexed thigh

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7
Q

Sartorius muscle attachments

A

Origin: ASIS
Insertion: Pes Anserinus

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8
Q

Sartorius muscle innervation

A

Femoral nerve

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9
Q

Sartorius muscle action

A

Flex, abduct, laterally rotate thigh; flex leg

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10
Q

Rectus femoris muscle Attachments

A

Origin: AIIS
Insertion:Tibial tuberosity

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11
Q

Rectus femoris muscle innervation

A

Femoral nerve

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12
Q

Rectus femoris muscle action

A

Flex thigh,Extend legs

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13
Q

Vastus lateralis muscle attachments

A

Origin: shaft of the femur
Insertion:Tibial tuberosity

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14
Q

Vastus lateralis muscle innervation

A

Femoral N

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15
Q

Vastus lateralis muscle action

A

Extended legs

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16
Q

Vastus intermedius muscle attachments

A

Origin: Shaft of the femur
Insertion: Tibial tuberosity

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17
Q

Vastus intermedius Innervation

A

Femoral N

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18
Q

Vastus intermedius Action

A

Extend legs

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19
Q

Vastus medialis muscle attachments

A

Origin: Shaft of the femur
Insertion: Tibial tuberosity

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20
Q

Vastus medialis muscle innervation

A

Femoral N

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21
Q

Vastus medialis muscle action

A

Extend legs

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22
Q

Articularis Genu Attachments

A

Origin: Anterior Surface of distal femur
Insertion: Articular capsule of the knee

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23
Q

Articularis Genu Action

A

Tightens capsule of the knee during leg extension

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24
Q

Articularis Genu Innervation

A

Femoral N

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25
Q

Gluteus maximus muscle attachments

A

Origin: ilium, Dorsal sacrum, coccyx, Sacrotuberous ligament
Insertion:Gluteal tuberosity, Lateral tibial condyle

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26
Q

Gluteus Maximus muscle action

A

Extended thigh an assist in lateral rotation

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27
Q

Gluteus Maximus muscle innervation

A

Inferior gluteal nerve

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28
Q

Gluteus Medius attachments

A

Origin: Ilium
Insertions: lateral aspect of greater trochanter of femur

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29
Q

Gluteus Medius muscle action

A

Abduct and medially rotate thigh

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30
Q

Gluteus Medius muscle innervation

A

Superior Gluteal N

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31
Q

Gluteus Minimus attachments

A

Origin: Ilium
Insertion: Anterior aspect greater trochanter of femur

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32
Q

Gluteus Minimus action

A

Abduct, medially rotate and flex thigh

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33
Q

Gluteus Minimus Innervation

A

Superior Gluteal N

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34
Q

Tensor Fascia Lata attachments

A

Origin: ASIS
Insertion: IT Tract and lateral tibial condyle

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35
Q

Tensor Fascia Lata Action

A

Abduct, medially rotate and flex thigh

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36
Q

Tensor Fascia Lata innervation

A

Superior Gluteal N

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37
Q

Piriformis Attachments

A

Origin: anterior surface sacrum
Insertion: Superior aspect greater trochanter femur

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38
Q

Piriformis action

A

Laterally rotate extended thigh, Abduct flexed thigh

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39
Q

Piriformis Innervation

A

Nerve to the piriformis

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40
Q

Superior Gemellus Attachment

A

Origin: ischial spine
Insertion:Medial aspect greater Trochanter of femur

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41
Q

Superior Gemellus Action

A

Laterally rotate extended thigh, Abduct flexed thigh

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42
Q

Superior Gemellus Innervation

A

Nerve to the obturator internus

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43
Q

Inferior Gemellus Attachments

A

Origin: Ischial tuberosity
Insertion: Medial aspect of great trochanter

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44
Q

Inferior Gemellus Action

A

Laterally rotate extended thigh, abduct flexed thigh

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45
Q

Inferior Gemellus Innervation

A

Nerve to quadratus femoris

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46
Q

Quadratus Femoris attachments

A

Origin: lateral aspect of ischial tuberosity
Insertion: Quadrate tubercle on intertrochanteric crest

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47
Q

Quadratus Femoris Action

A

laterally rotate thigh

48
Q

Quadratus Femoris Innervation

A

Nerve to Quadratus Femoris

49
Q

Quadratus Externus attachments

A

Origin: margin of obturator foramen
Insertion: Trochanteric fossa of femur

50
Q

Quadratus Externus action

A

Laterally rotate thigh

51
Q

Quadratus Externus innervation

A

Obturator N

52
Q

Obturator Internus attachment

A

Origin: Pelvic surfaces of the ilium and ischium and obturator membrane
Insertion: Greater trochanter of the femur

53
Q

Obturator Internus action

A

laterally rotate thigh, abduct flexed thigh

54
Q

Obturator Internus innervation

A

nerve to the obturator

55
Q

Pectineus attachments

A

Origin: Superior pubic ramus
Insertion: Pectineal line of the femur

56
Q

Pectineus action

A

Adduct and flex thigh

57
Q

Pectineus innervation

A

Femoral N

58
Q

Adductor Longus attachments

A

origin: body of pubis
insertion: middle 1/3 of the linea apsera

59
Q

Adductor Longus action

A

Adduct thigh

60
Q

Adductor Longus innervation

A

Anterior division of obturator N

61
Q

Adductor Brevis attachments

A

Origin: Body and inferior pubic ramus
Insertion: Pectineal line

62
Q

Adductor Brevis actions

A

Adduct thigh

63
Q

Adductor Brevis innervation

A

Anterior division of obturator N

64
Q

Adductor Magnus attachments

A

Origin: ischiopubic ramus and ischial tuberosity
Insertion: Gluteal tuberosity

65
Q

Adductor Magnus actions

A

Adduct, flex, extend thigh

66
Q

Adductor Magnus innervation

A

Upper fibers: posterior division obturator N

Lower fibers: tibial division sciatic N

67
Q

Gracilis attachments

A

origin: inferior pubic rami and body of pubis
Insertion: Medial aspect proximal end of tibia

68
Q

Gracilis Action

A

Adduct the thigh and assist in medial thigh rotation, flex the leg

69
Q

Gracilis Innervation

A

Anterior division of obturator N

70
Q

Biceps Femoris attachments

A 
Origin
1. Long head: ischial tuberosity
2. Short head: linea aspera and lateral supracondylar line
Insertion
Lateral aspect fibular head
71
Q

Biceps Femoris action

A

Both heads: flex and laterally rotate leg when flexed

Long head: extend thigh

72
Q

Biceps Femoris innervation

A

Long Head: tibial division of sciatic N

Short Head: common fibular division of sciatic N

73
Q

Semitendinosus attachments

A

Origin: Ischial Tuberosity
Insertion: Medial aspect proximal end of tibia

74
Q

Semitendinosus Action

A

extend thigh, flex and medially rotate leg

75
Q

Semitendinosus innervation

A

Tibial division of sciatic N

76
Q

Semimembranosus attachments

A

Origin: Ischial Tuberosity
Insertion: Posterior aspect medial tibial condyle

77
Q

Semimembranosus action

A

extend thigh, flex and medially rotate leg when flexed

78
Q

Semimembranosus Innervation

A

Tibial division of sciatic N

79
Q

Tibialis Anterior attachments

A

Origin: Lateral tibial condyle, interosseous membrane
Insertion: inferomedial aspect medial cuneiform and base of 1st metatarsal

80
Q

Tibialis Anterior action

A

dorsiflex the foot, invert the foot

81
Q

Tibialis Anterior innervation

A

Deep Fibular N

82
Q

Extensor Hallicus Longus attachments

A

Origin: Anterior aspect fibula, interosseous membrane
Insertion: Dorsum of base of 1st distal phalanx

83
Q

Extensor Hallicus Longus action

A

Extend hallux, dorsiflex foot

84
Q

Extensor Hallicus Longus innervation

A

Deep fibular N

85
Q

Extensor Digitorum Longus attachments

A

Origin: lateral tibial condyle, medial aspect of fibula and interosseous membrane
Insertion: 2nd-5th middle and distal phalanges

86
Q

Extensor Digitorum Longus action

A

extend digits 2-5 and dorsiflex foot

87
Q

Extensor Digitorum Longus innervation

A

deep fibular N

88
Q

Fibularis Tertius attachments (variable in humans)

A

Origin: Anterioinferior aspect of fibula and interosseous membrane
Insertion: Dorsal aspect base of 5th metatarsal

89
Q

Fibularis Tertius Action

A

Dorsiflex foot, assist in eversion of foot

90
Q

Fibularis Tertius Innervation

A

Deep fibular N

91
Q

Fibularis Longus attachments

A

Origin: Head and superior aspect of fibula
Insertion: Base of 1st metatarsal and medial cuneiform

92
Q

Fibularis Longus action

A

Evert foot, plantarflexion

93
Q

Fibularis Longus Innervation

A

Superficial fibular N

94
Q

Fibularis Brevis attachments

A

Origin: inferolateral aspect of fibula
Insertion: Tuberosity of base of 5th metatarsal

95
Q

Fibularis Brevis action

A

Evert foot, plantarflexion

96
Q

Fibularis Brevis innervation

A

Superficial fibular N

97
Q

Gastrocnemius attachments

A

Origin
Lateral head: lateral aspect lateral femoral condyle
Medial head: popliteal surface above medial femoral condyle
Insertion: posterior calcaneous via calcaneal tendon

98
Q

Gastrocnemius action

A

Plantarflexion, elevate heel, flex leg

99
Q

Gastrocnemius innervation

A

tibial N

100
Q

Soleus attachments

A

Origin: posterior aspect head and body of fibula, soleal line
insertion: Posterior calcaneus via calcaneal tendon

101
Q

Soleus action

A

plantarflexion of foot

102
Q

Soleus innervation

A

Tibial N

103
Q

Plantaris attachments

A

Origin: inferior lateral supracondylar line and oblique popliteal l

104
Q

Plantaris action

A

weakly assist in plantarflexion and flexing the knee

105
Q

Plantaris innervation

A

Tibial N

106
Q

Popliteus attachments

A

Origin: lateral aspect of lateral femoral condyle and lateral meniscus
Insertion: posterior aspect tibia superiomedial to the soleal line

107
Q

Popliteus action

A

weakly flex the knee

108
Q

Popliteus innervation

A

Tibial N

109
Q

Flexor Hallicus Longus attachments

A

Origin: Posteriorinferior fibula and interosseous membrane
Insertion: Base of 1st distal phalanx

110
Q

Flexor Hallicus Longus action

A

flex hallux

111
Q

Flexor Hallicus longus innervation

A

Tibial N

112
Q

Flexor Digitorum Longus attachments

A

Origin: Posteriomedial tibia inferior to soleal line
Insertion: Base of 2nd-5th distal phalanges

113
Q

Flexor Digitorum Longus action

A

Flex digits 2-5, plantarflex

114
Q

Flexor Digitorum Longus innervation

A

Tibial N

115
Q

Tibialis Posterior attachments

A

Origin: Posterior fibula and tibia inferior to soleal line and interosseus membrane
Insertion: Tuberosity of the navicular, medial and intermediate cuneiforms, bases of 3rd-5th metatarsals

116
Q

Tibialis Posterior Action

A

Plantarflexion and inversion

117
Q

Tibialis Posterior innervation

A

Tibial N

MSK Lower Limb (1 decks)

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