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MSK 2 > Muscles > Flashcards

Muscles Flashcards

1
Q

Tensor fascia latae action

A

Abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight-bearing and advance opposite (unsupported) side during its swing phase

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2
Q

Tensor fascia latae innervation

A

Superior gluteal (L5-S1)

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3
Q

Sartorius action

A

Flexes, abducts and laterally rotates thigh at hip joint, medially rotating leg when knee is flexed

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4
Q

Sartorius innervation

A

Femoral

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5
Q

Rectus femoris (part of Quadriceps femoris) action

A

Extend leg at knee joint; also steadies hip joint and helps iliopsoas flex thigh

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6
Q

Rectus femoris (part of Quadriceps femoris) innervation

A

Femoral

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7
Q

Vastus lateralis, Vastus medialis, and Vastas intermedius (part of Quadriceps femoris) action

A

Extend leg at knee joint

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8
Q

Vastus lateralis, Vastus medialis, and Vastas intermedius (part of Quadriceps femoris) innervation

A

Femoral

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9
Q

Pectineus action

A

Adducts and flexes thigh; assist with medial rotation of thigh

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10
Q

Pectineus innervation

A

Femoral (may receive a branch from obturator)

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11
Q

Gracilis action

A

Adducts thigh; flexes leg; helps rotate leg medially

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12
Q

Gracilis innervation

A

Obturator nerve

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13
Q

Adductor longus innervation

A

Obturator nerve (anterior division)

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14
Q

Adductor longus action

A

Adducts thigh

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15
Q

Adductor brevis action

A

Adducts thigh; to some extent flexes it

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16
Q

Adductor brevis innervation

A

Obturator nerve (anterior division)

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17
Q

Adductor magnus action

A

Adducts thigh; Adductor part: flexes thigh; Hamstring part: extends thigh

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18
Q

Adductor magnus innervation

A

Adductor part: obturator(posterior division); Hamstring part: tibial part of sciatic nerve

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19
Q

Iliopsoas (Psoas major, psoas minor, and iliacus) innervation

A

Psoas major: Ventral rami of lumbar nerves L1-L3; Psoas minor: Ventral rami of lumbar nerves L1-L2; Iliacus: Femoral

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20
Q

Iliopsoas (Psoas major, psoas minor, and iliacus) action

A

Act conjointly in flexing thigh at hip joint and in stabilizing this joint

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21
Q

Gluteus maximus action

A

Extends thigh (especially from flexed position) and assists in its lateral rotation; steadies thigh and assists in rising from seated position

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22
Q

Gluteus maximus innervation

A

Inferior gluteal

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23
Q

Gluteus medius and Gluteus minimus innervation

A

Superior gluteal

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24
Q

Gluteus medius and Gluteus minimus action

A

Abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight-bearing and advance opposite (unsupported) side during its swing phase

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25
Q

Piriformis action

A

Laterally rotate extended thigh and abduct flexed thigh; steady femoral head in acetabulum

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26
Q

Piriformis innervation

A

Ventral rami of S1 and S2

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27
Q

Obturator internus innervation

A

Nerve to obturator internus

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28
Q

Obturator internus action

A

Laterally rotate extended thigh and abduct flexed thigh; steady femoral head in acetabulum

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29
Q

Obturator externus innervation

A

Obturator

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30
Q

Superior gemelli and inferior gemelli action

A

Laterally rotate extended thigh and abduct flexed thigh; steady femoral head in acetabulum

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31
Q

Superior gemelli innervation

A

Nerve to obturator internus

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32
Q

Inferior gemelli innervation

A

Nerve to quadratus femoris

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33
Q

Quadratus femoris innervation

A

Nerve to quadratus femoris

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34
Q

Quadratus femoris action

A

Laterally rotates thigh; steadies head of femur in acetabulum

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35
Q

Biceps femoris action

A

Flexes leg and rotates it laterally when knee is flexed; extends thigh

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36
Q

Biceps femoris innervation

A

Long head: tibial division of sciatic nerve; Short head: common fibular division of sicatic nerve

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37
Q

Semitendinosus and Semimembranosus innervation

A

Tibial division of sciatic

38
Q

Semitendinosus and Semimembranosus action

A

Extend thigh; flex leg and rotate it medially when knee is flexed; when thigh and leg are flexed it can extend trunk

39
Q

Gastrocnemius innervation

A

Tibial

40
Q

Gastrocnemius action

A

Plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joint

41
Q

Plantaris innervation

A

Tibial

42
Q

Plantaris action

A

Weakly assists gastrocnemius in plantarflexing ankle

43
Q

Soleus innervation

A

Tibial

44
Q

Soleus action

A

Plantarflexes ankle independent of position of knee; steadies leg on foot

45
Q

Popliteus innervation

A

Tibial

46
Q

Popliteus action

A

Weakly flexes knee and unlocks it by rotating femur 5¡ on fixed tibia; medially rotates tibia of unplanted limb

47
Q

Flexor hallucis longus innervation

A

tibial

48
Q

Flexor hallucis longus action

A

Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot

49
Q

Flexor digitorum longus innervation

A

Tibial

50
Q

Flexor digitorum longus action

A

Medial part of posterior surface of tibia inferior to soleal line; by a broad tendon to fibula

51
Q

Tibialis posterior innervation

A

Tibial

52
Q

Tibialis posterior action

A

Plantarflexes ankle; inverts foot

53
Q

Tibialis anterior innervation

A

Deep fibular

54
Q

Tibialis anterior action

A

Dorsiflexes ankle and inverts foot

55
Q

Extensor digitorum longus innervation

A

Deep fibular

56
Q

Extensor digitorum longus innervation

A

Deep fibular

57
Q

Extensor digitorum longus action

A

Extends lateral 4 digits and dorsiflexes ankle

58
Q

Extensor hallucis longus innervation

A

Deep fibular

59
Q

Extensor hallucis longus action

A

Extends great toe and dorsiflexes ankle

60
Q

Fibularis tertius innervation

A

Deep fibular

61
Q

Fibularis tertius action

A

Dorsiflexes ankle and aids in eversion of foot

62
Q

Fibularis longus innervation

A

Superficial fibular

63
Q

Fibularis longus action

A

Everts foot and weakly plantarflexes ankle

64
Q

Fibularis brevis innervation

A

Superficial fibular

65
Q

Fibularis brevis action

A

Everts foot and weakly plantarflexes ankle

66
Q

Extensor digitorum brevis innervation

A

Deep fibular

67
Q

Extensor digitorum brevis action

A

Aids the extensor digitorum longus in extending the 4 lateral toes at the metatarsophalangeal and interphalangeal joints

68
Q

Extensor hallucis brevis innervation

A

Deep fibular

69
Q

Extensor hallucis brevis action

A

Aids the extensor hallucis longus in extending the great toe at the metatarsophalangeal joint

70
Q

Flexor digitorum brevis innervation

A

Medial plantar

71
Q

Flexor digitorum brevis action

A

Flexes lateral 4 digits

72
Q

Abductor hallucis innervation

A

Medial plantar

73
Q

Abductor hallucis action

A

Abducts and flexes great toe

74
Q

Abductor digiti minimi innervation

A

Lateral plantar

75
Q

Abductor digiti minimi action

A

Abducts and flexes 5th digit

76
Q

Flexor hallucis longus innervation

A

Tibial

77
Q

Flexor hallucis longus action

A

Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot

78
Q

Flexor digitorum longus innervation

A

Tibial

79
Q

Flexor digitorum longus action

A

Flexes lateral 4 digits’ plantarflexes ankle; supports longitudinal arches of foot

80
Q

Lumbricals innervation

A

Medial one: medial plantar; Lateral three: lateral plantar

81
Q

Lumbricals action

A

Flex proximal phalanges; extend middle and distal phalanges of lateral 4 digits

82
Q

Quadratus plantae innervation

A

Lateral plantar

83
Q

Quadratus plantae action

A

Assists flexor digitorum longus in flexing lateral 4 digits

84
Q

Adductor hallucis innervation

A

Deep branch of lateral plantar

85
Q

Adductor hallucis action

A

Traditionally said to adduct 1st digit; assists in transverse arch of foot by metatarsals medially

86
Q

Flexor hallucis brevis innervation

A

Medial plantar

87
Q

Flexor hallucis brevis action

A

Flexes proximal phalanx of 1st digit

88
Q

Plantar interossei (3 muscles) innervation

A

Lateral plantar

89
Q

Plantar interossei (3 muscles) action

A

Adducts digits 3-5 and flex metatarsophalangeal joints

90
Q

Dorsal interossei (4 muscles) innervation

A

Lateral plantar

91
Q

Dorsal interossei (4 muscles) action

A

Abduct digits 2-4 and flex metatarsophalangeal joints

MSK 2 (6 decks)

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