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MSK 2 > Muscles > Flashcards

Muscles Flashcards

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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
Piriformis action
Laterally rotate extended thigh and abduct flexed thigh; steady femoral head in acetabulum
26
Piriformis innervation
Ventral rami of S1 and S2
27
Obturator internus innervation
Nerve to obturator internus
28
Obturator internus action
Laterally rotate extended thigh and abduct flexed thigh; steady femoral head in acetabulum
29
Obturator externus innervation
Obturator
30
Superior gemelli and inferior gemelli action
Laterally rotate extended thigh and abduct flexed thigh; steady femoral head in acetabulum
31
Superior gemelli innervation
Nerve to obturator internus
32
Inferior gemelli innervation
Nerve to quadratus femoris
33
Quadratus femoris innervation
Nerve to quadratus femoris
34
Quadratus femoris action
Laterally rotates thigh; steadies head of femur in acetabulum
35
Biceps femoris action
Flexes leg and rotates it laterally when knee is flexed; extends thigh
36
Biceps femoris innervation
Long head: tibial division of sciatic nerve; Short head: common fibular division of sicatic nerve
37
Semitendinosus and Semimembranosus innervation
Tibial division of sciatic
38
Semitendinosus and Semimembranosus action
Extend thigh; flex leg and rotate it medially when knee is flexed; when thigh and leg are flexed it can extend trunk
39
Gastrocnemius innervation
Tibial
40
Gastrocnemius action
Plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joint
41
Plantaris innervation
Tibial
42
Plantaris action
Weakly assists gastrocnemius in plantarflexing ankle
43
Soleus innervation
Tibial
44
Soleus action
Plantarflexes ankle independent of position of knee; steadies leg on foot
45
Popliteus innervation
Tibial
46
Popliteus action
Weakly flexes knee and unlocks it by rotating femur 5¡ on fixed tibia; medially rotates tibia of unplanted limb
47
Flexor hallucis longus innervation
tibial
48
Flexor hallucis longus action
Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot
49
Flexor digitorum longus innervation
Tibial
50
Flexor digitorum longus action
Medial part of posterior surface of tibia inferior to soleal line; by a broad tendon to fibula
51
Tibialis posterior innervation
Tibial
52
Tibialis posterior action
Plantarflexes ankle; inverts foot
53
Tibialis anterior innervation
Deep fibular
54
Tibialis anterior action
Dorsiflexes ankle and inverts foot
55
Extensor digitorum longus innervation
Deep fibular
56
Extensor digitorum longus innervation
Deep fibular
57
Extensor digitorum longus action
Extends lateral 4 digits and dorsiflexes ankle
58
Extensor hallucis longus innervation
Deep fibular
59
Extensor hallucis longus action
Extends great toe and dorsiflexes ankle
60
Fibularis tertius innervation
Deep fibular
61
Fibularis tertius action
Dorsiflexes ankle and aids in eversion of foot
62
Fibularis longus innervation
Superficial fibular
63
Fibularis longus action
Everts foot and weakly plantarflexes ankle
64
Fibularis brevis innervation
Superficial fibular
65
Fibularis brevis action
Everts foot and weakly plantarflexes ankle
66
Extensor digitorum brevis innervation
Deep fibular
67
Extensor digitorum brevis action
Aids the extensor digitorum longus in extending the 4 lateral toes at the metatarsophalangeal and interphalangeal joints
68
Extensor hallucis brevis innervation
Deep fibular
69
Extensor hallucis brevis action
Aids the extensor hallucis longus in extending the great toe at the metatarsophalangeal joint
70
Flexor digitorum brevis innervation
Medial plantar
71
Flexor digitorum brevis action
Flexes lateral 4 digits
72
Abductor hallucis innervation
Medial plantar
73
Abductor hallucis action
Abducts and flexes great toe
74
Abductor digiti minimi innervation
Lateral plantar
75
Abductor digiti minimi action
Abducts and flexes 5th digit
76
Flexor hallucis longus innervation
Tibial
77
Flexor hallucis longus action
Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot
78
Flexor digitorum longus innervation
Tibial
79
Flexor digitorum longus action
Flexes lateral 4 digits' plantarflexes ankle; supports longitudinal arches of foot
80
Lumbricals innervation
Medial one: medial plantar; Lateral three: lateral plantar
81
Lumbricals action
Flex proximal phalanges; extend middle and distal phalanges of lateral 4 digits
82
Quadratus plantae innervation
Lateral plantar
83
Quadratus plantae action
Assists flexor digitorum longus in flexing lateral 4 digits
84
Adductor hallucis innervation
Deep branch of lateral plantar
85
Adductor hallucis action
Traditionally said to adduct 1st digit; assists in transverse arch of foot by metatarsals medially
86
Flexor hallucis brevis innervation
Medial plantar
87
Flexor hallucis brevis action
Flexes proximal phalanx of 1st digit
88
Plantar interossei (3 muscles) innervation
Lateral plantar
89
Plantar interossei (3 muscles) action
Adducts digits 3-5 and flex metatarsophalangeal joints
90
Dorsal interossei (4 muscles) innervation
Lateral plantar
91
Dorsal interossei (4 muscles) action
Abduct digits 2-4 and flex metatarsophalangeal joints

MSK 2 (6 decks)

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