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Block 3 > Muscle Actions > Flashcards

Muscle Actions Flashcards

1
Q

Obturator internus (2)

A

Lateral rotation of thigh
Holds head of femur in acetabulum

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2
Q

Piriformis (2)

A

Lateral rotation of thigh
Holds head of femur in acetabulum

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3
Q

Iliopsoas (1)

A

Powerful flexion of the hip

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4
Q

Sartorius (2)

A

Flexes and laterally rotates thigh
Flexes and medially rotates leg

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5
Q

Tensor fascia lata (1)

A

Abducts, medially rotates, and flexes thigh

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6
Q

Quadriceps femoris group (2)

A

Extends leg
Flexes thigh (rectus femoris only)

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7
Q

Pectineus (1)

A

Adducts and flexes thigh

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8
Q

Gracilis (2)

A

Adduction of thigh
Flexes and medially rotates leg

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9
Q

Adductor longus (1)

A

Adducts thigh

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10
Q

Adductor brevis (1)

A

Adducts thigh

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11
Q

Adductor magnus (3)

A

Adducts thigh
Adductor: flexes thigh
Hamstring: extends thigh

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12
Q

Obturator externus (1)

A

Laterally rotates thigh

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13
Q

Gluteus maximus (1)

A

Extends and laterally rotates thigh

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14
Q

Gluteus medius (1)

A

Abducts and medially rotates thigh

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15
Q

Gluteus minimus (1)

A

Abducts and medially rotates thigh

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16
Q

Quadratus femoris (1)

A

Laterally rotates thigh

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17
Q

Superior gemellus (1)

A

Laterally rotates thigh

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18
Q

Inferior gemellus (1)

A

Laterally rotates thigh

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19
Q

Biceps femoris (2)

A

Extends thigh (long)
Flexes leg and laterally rotates leg when knee is flexed (long and short)

20
Q

Semitendinosus (2)

A

Extends thigh
Flexes leg and medially rotates leg when flexed

21
Q

Semimembranosus (2)

A

Extends thigh
Flexes leg and medially rotates leg when flexed

22
Q

Anterior tibialis (1)

A

Dorsiflexes and inverts foot

23
Q

Extensor digitorum longus (2)

A

Extends lateral 4 digits
Dorsiflexes ankle

24
Q

Extensor hallucis longus (2)

A

Extends hallux
Dorsiflex ankle

25
Q

Fibularis tertius (2)

A

Weakly dorsiflexes ankle
Eversion of foot

26
Q

Fibularis longus (2)

A

Everts foot
Plantarflexes ankle

27
Q

Fibularis brevis (2)

A

Everts foot
Plantarflexes ankle

28
Q

Gastrocnemius (3)

A

Plantarflexes ankle when knee is extended
Raises heel during walking
Flexes leg at knee

29
Q

Soleus (2)

A

Plantarflexes ankle independent of position of the knee
Steadies leg on foot

30
Q

Plantaris (2)

A

Assists in plantarflexion of ankle
Flexion of knee

31
Q

Flexor digitorum longus (3)

A

Flexes later 4 digits
Plantarflexes ankle
Supports longitudinal arch of foot

32
Q

Popliteus (1)

A

Laterally rotate femur when foot is fixed

33
Q

Flexor hallucis longus (3)

A

Flexes hallux
Plantarflexes ankle
Supports medial longitudinal arch of foot

34
Q

Tibialis posterior (3)

A

Plantarflexes ankle
Inverts foot
Supports medial arch of foot

35
Q

Extensor digitorum brevis (1)

A

Extends proximal interphalangeal joints of digits 2-5

36
Q

Extensor hallucis brevis (1)

A

Extends metatarsophalangeal joint of digit 1

37
Q

Abductor hallucis (1)

A

Abduct and flex hallux

38
Q

Flexor digitorum longus (1)

A

Flexes digits 2-5

39
Q

Abductor digiti minimi (1)

A

Abducts and flexes digit 5

40
Q

Lumbricals (2)

A

Flexes metatarsophalangeal joints
Extends interphalangeal joints of digits 2-5

41
Q

Quadratus plantae (1)

A

Assists in flexion of digits 2-5

42
Q

Flexor hallucis brevis (1)

A

Flexes digit 1

43
Q

Adductor hallucis (1)

A

Adducts hallux

44
Q

Adductor digiti minimi (1)

A

Flexes metatarsophalangeal joint of digit 5

45
Q

Plantar interossei (1)

A

Adducts digits 3-5

46
Q

Dorsal interossei (1)

A

Abducts digits 2-4

Block 3 (3 decks)

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