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MSK 2 > Muscle of the leg > Flashcards

Muscle of the leg Flashcards

1
Q

Tibialis Anterior m. Origin

A
  • Lateral tibial condyle
  • Lateral aspect of proximal tibia
  • interosseous membrane
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2
Q

Tibialis Anterior m. Insertion

A
  • Inferomedial aspect medial cuneiform

- Base of 1st metatarsal

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3
Q

Tibialis Anterior m. Action

A
  • Dorsiflex foot

- Invert foot

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4
Q

Tibialis Anterior m. Innervation

A

Deep fibular n.

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5
Q

Extensor Hallucis Longus m. Origin

A
  • Anterior aspect of fibula

- Interosseous membrane

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6
Q

Extensor Hallucis Longus m. Insertion

A

Dorsum of base of 1st distal phalanx

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7
Q

Extensor Hallucis Longus m. Action

A
  • Extend hallux

- Dorsiflex foot

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8
Q

Extensor Hallucis Longus m. Innervation

A

Deep fibular N

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9
Q

Extensor Digitorum Longus m. Origin

A
  • Lateral tibial condyle
  • Medial aspect of fibula
  • Interosseous membrane
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10
Q

Extensor Digitorum Longus m. Insertion

A

2-5th middle and distal phalanges

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11
Q

Extensor Digitorum Longus m. Action

A
  • Extend digits 2-5

- Dorsiflex foot

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12
Q

Extensor Digitorum Longus m. Innervation

A

Deep fibular n.

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13
Q

Fibularis Tertius m. Origin

A
  • Anteroinferior aspect of fibula

- interosseous membrane

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14
Q

Fibularis Tertius m. Insertion

A

Dorsal aspect of base of 5th metatarsal

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15
Q

Fibularis Tertius m. Action

A
  • Dorsiflex foot

- Assist in eversion of foot

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16
Q

Fibularis Tertius m. Innervation

A

Deep fibular n.

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17
Q

Fibularis longus m. Origin

A

Head and superior aspect of fibula

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18
Q

Fibularis longus m. Insertion

A
  • Base of 1st metatarsal

- medial cuneiform

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19
Q

Fibularis longus m. Action

A
  • Evert foot

- Assist in plantar flexion

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20
Q

Fibularis longus m. Innervation

A

Superficial fibular n.

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21
Q

Fibularis Brevis m. Origin

A

Inferolateral aspect of fibula

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22
Q

Fibularis Brevis m. Insertion

A

Tuberosity of base of 5th metatarsal

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23
Q

Fibularis Brevis m. Action

A
  • Evert foot

- Assist in plantar flexion

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24
Q

Fibularis Brevis m. Innervation

A

Superficial fibular n.

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25
Q

Gastrocnemius m. Origin

A

Lateral head: lateral aspect of lateral femoral condyle

Medial head: popliteal surface above medial femoral condyle

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26
Q

Gastrocnemius m. Insertion

A

Posterior calcaneus via calcaneus t.

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27
Q

Gastrocnemius m. Action

A
  • Plantarflexion w/ extended knee
  • Elevate heel
  • Flex leg
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28
Q

Gastrocnemius m. Innervation

A

Tibial n.

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29
Q

Soleus m. Origin

A
  • Posterior aspect head and body of fibula

- Soleal line

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30
Q

Soleus m. Insertion

A

Posterior calcaneus via calcaneus t.

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31
Q

Soleus m. Action

A

Plantar flexion of foot at ankle

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32
Q

Soleus m. Innervation

A

Tibial n.

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33
Q

Plantaris m. Origin

A

Inferior lateral supracondylar line and oblique popliteal t.

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34
Q

Plantaris m. Insertion

A

Posterior calcaneus via calcaneus t.

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35
Q

Plantaris m. Action

A
  • Weakly assist in plantar flexion

- Flexing at knee

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36
Q

Plantaris m. Innervation

A

Tibial n.

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37
Q

Popliteus m. Origin

A

Lateral aspect of femoral condyle and lateral meniscus

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38
Q

Popliteus m. Insertion

A

Posterior aspect of tibia superomedial to the soleal line

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39
Q

Popliteus m. Action

A
  1. Weakly flex knee
  2. Unlock knee by laterally rotating femur 5 degrees on fixed tibia
  3. medially rotate tibia of flexed thigh
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40
Q

Popliteus m. Innervation

A

tibial n.

41
Q

Flexor Hallucis Longus m. Origin

A
  • Posteroinferior fibula

- Interosseous membrane

42
Q

Flexor Hallucis Longus m. Insertion

A

Base of 1st distal phalanx

43
Q

Flexor Hallucis Longus m. Action

A
  • Flex hallux

- Weakly plantar flex foot at ankle

44
Q

Flexor Hallucis Longus m. Innervation

A

Tibial n.

45
Q

Flexor Digitorum Longus m. Origin

A

Posteromedial tibia inferior to soleal line

46
Q

Flexor Digitorum Longus m. Insertion

A

Base of 2-5th distal phalanx

47
Q

Flexor Digitorum Longus m. Action

A
  • Flex digits 2-5

- Plantarflex foot at ankle

48
Q

Flexor Digitorum Longus m. Innervation

A

Tibial n.

49
Q

Tibialis Posterior m. Origin

A
  • Posterior fibula
  • Tibia inferior to soleal line
  • Interosseous membrane
50
Q

Tibialis Posterior m. Insertion

A
  • Tuberosity of navicular, medial, and intermediate cuneiforms
  • Base of 3-5th metatarsals
51
Q

Tibialis Posterior m. Action

A

plantarflexion and inversion

52
Q

Tibialis Posterior m. Innervation

A

tibial n.

53
Q

Extensor Digitorum brevis m. Origin

A
  • Superolateral aspect of calcaneus

- Interosseous talocalcaneal l.

54
Q

Extensor Digitorum brevis m. Insertion

A

lateral aspect extensor digitorum longus t.

55
Q

Extensor Digitorum brevis m. Action

A

extend digits 2-5

56
Q

Extensor Digitorum brevis m. Innervation

A

deep fibular n.

57
Q

Extensor Hallucis Brevis m. Origin

A

-Superolateral aspect of calcaneus
-Interosseous talocalcaneal l.
(common with extensor digitorum m.)

58
Q

Extensor Hallucis Brevis m. Insertion

A

Dorsal aspect of base of 1st proximal phalanx (toe)

59
Q

Extensor Hallucis Brevis m. Action

A

extend toe at metatarsophalangeal joint

60
Q

Extensor Hallucis Brevis m. Innervation

A

deep fibular n.

61
Q

Abductor Hallucis m. Origin

A

medial tubercle calcaneal tuberosity

62
Q

Abductor Hallucis m. Insertion

A

medial aspect base 1st proximal phalanx (toe)

63
Q

Abductor Hallucis m. Action

A

ABduct and flex toe

64
Q

Abductor Hallucis m. Innervation

A

medial plantar n.

65
Q

Flexor Digitorum Brevis m. Origin

A

medial tubercle calcaneal tuberosity

66
Q

Flexor Digitorum Brevis m. Insertion

A

intermediate phalanges 2-5th digit

67
Q

Flexor Digitorum Brevis m. Action

A

flex digits 2-5

68
Q

Flexor Digitorum Brevis m. Innervation

A

medial plantar n.

69
Q

Abductor Digiti minimi m. Origin

A

calcaneal tuberosity

70
Q

Abductor Digiti minimi m. Insertion

A

lateral aspect oof base 5th proximal phalanx

71
Q

Abductor Digiti minimi m. Action

A

ABduct and flex 5th digit

72
Q

Abductor Digiti minimi m. Innervation

A

lateral plantar n.

73
Q

Quadratus Plantae m. Origin

A

plantar surface of calcaneus

74
Q

Quadratus Plantae m. Insertion

A

lateral aspect of flexor digitorum longus t.

75
Q

Quadratus Plantae m. Action

A

assist in flexing digits 2-5

76
Q

Quadratus Plantae m. Innervation

A

lateral plantar n.

77
Q

Lumbrical m. Origin

A

flexor digitorum longus t.

78
Q

Lumbrical m. Insertion

A

medial proximal phalanx of digits 2-5

79
Q

Lumbrical m. Action

A
  • Flex metatarsophalangeal joint

- Extend proximal and distal interphalangeal joints

80
Q

Lumbrical m. Innervation

A

1st: medial plantar n.

2-4th: lateral plantar n.

81
Q

Flexor Hallucis Brevis m. Origin

A

plantar surface cuboid b. and lateral cuneiform b.

82
Q

Flexor Hallucis Brevis m. Insertion

A

base of 1st proximal phalanx

83
Q

Flexor Hallucis Brevis m. Action

A

flex 1st proximal phalanx

84
Q

Flexor Hallucis Brevis m. Innervation

A

medial plantar n.

85
Q

Flexor Digit Minimi Brevis m. Origin

A

base 5th metatarsal

86
Q

Flexor Digit Minimi Brevis m. Insertion

A

base 5th proximal phalanx

87
Q

Flexor Digit Minimi Brevis m. Action

A

flex proximal phalanx of 5th digit

88
Q

Flexor Digit Minimi Brevis m. Innervation

A

superficial lateral plantar n.

89
Q

Adductor hallucis m. Origin

A
  • Oblique head: base of 2-4th metatarsals

- Transverse head: plantar metatarsophalangeal l.

90
Q

Adductor hallucis m. Insertion

A

lateral aspect of base of 1st proximal phalanx

91
Q

Adductor hallucis m. Action

A

adduct hallux

92
Q

Adductor hallucis m. Innervation

A

deep lateral plantar n.

93
Q

Dosal Interossei m. (DAB) Origin

A

adjacent edges and bases of 1st-5th metatarsal bones

94
Q

Dosal Interossei m. (DAB) Action

A
  • Abduct digits 2-4

- flex metatarsophalangeal joint

95
Q

Dosal Interossei m. (DAB) Innervation

A

lateral plantar n.

96
Q

Plantar Interossei m. (PAD) Origin

A

medial aspects and bases of 3rd-5th metatarsal

97
Q

Plantar Interossei m. (PAD) Action

A
  • Adduct digits 3-5

- flex metatarsophalangeal joint

98
Q

Plantar Interossei m. (PAD) Innervation

A

lateral plantar n.

MSK 2 (6 decks)

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