Exercises 9 and 10 Muscle, Action/Innerv Human Anatomy Lower Extremity

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1

Vastus Lateralis - Action

Extends knee

2

Vastus Lateralis - Innerv

Femoral N ("thigh" nerve)

3

Vastus Medialis - Action

Extends knee and adducts patella

4

Vastus Medialis - Innerv

Femoral N

5

Vastus Intermedius - Action

Extends knee

6

Vastus Intermedius - Innerv

Femoral N

7

Rectus Femoris - Action

Flexes hip; extends knee (note it crosses 2 joints)

8

Rectus Femoris - Innerv

Femoral N

9

Sartorius - Action

Laterally rotates and flexes hip; flexes knee

10

Sartorius - Innerv

Femoral N

11

Iliopsoas - Action

Flexes hip

12

Iliopsoas - Innerv

Femoral N

13

Adductor Longus - Action

Adducts hip

14

Adductor Longus - Innerv

Obturator N

15

Adductor Magnus - Action

Adducts hip; flexes hip; extends hip

16

Adductor Magnus - Innerv

Obturator N (& sciatic N)

17

Gracilis - Action

Adducts hip; medially rotates & flexes knee

18

Gracilis - Innerv

Obturator N

19

Piriformis - Action

Laterally rotates hip; abducts hip & Quadratus femoris

20

Tensor fasciae latae - Action

Abducts & medially rotates hip (flexes hip; extends knee)

21

Tensor fasciae latae - Innerv

Sup. Gluteal N

22

Gluteus Medius - Action

Abducts and medially rotates hip (med. rotates hip when thigh is extended)

23

Gluteus Medius - Innerv

Sup. Gluteal N

24

Gluteus maximus - Action

Extends, abducts, & laterally rotates hip

25

Gluteus maximus - Innerv

Inf. Gluteal N

26

Semimembranosus - Action

Extends hip; flexes knee (& med.rotates leg when knee is semiflexed

27

Semimembranosus - Innerv

Sciatic N

28

Semitendinosus - Action

Extends hip; flexes knee (& med. rotates leg when knee is semiflexed)

29

Semitendinosus - Innerv

Sciatic N or sacral plexus

30

Biceps femoris long head - Action

Flexes knee; long head also extends hip (lat. rotates knee)

31

Biceps femoris long head - Innerv

Sciatic N of sacral plexus

32

Biceps femoris short head - Action

Flexes knee

33

Biceps femoris short head - Innerv

Sciatic N of sacral plexus

34

Soleus - Action

Plantarflexes ankle

35

Soleus - Innerv

Tibial N

36

Plantaris - Action

Plantarflexes ankle (no leverage to flex knee)

37

Plantaris - Innerv

Tibial N

38

Popliteus - Action

Flexes knee; medially rotates knee

39

Popliteus - Innerv

Tibial N

40

Gastrocnemius - Action

Plantarflexes ankle

41

Gastrocnemius - Innerv

Tibial N

42

Flexor digitorum longus - Action

Flexes digits II-V; plantarflexes ankle (aids in inverting pes)

43

Flexor digitorum longus - Innerv

Tibial N

44

Tibialis posterior - Action

Inverts pes; plantarflexes ankle

45

Tibialis posterior - Innerv

Tibial N

46

Tibialis anterior - Action

Inverts pes; dorsiflexes ankle

47

Tibialis anterior - Innerv

Deep fibular N

48

Extensor hallucis longus - Action

Extends hallux; dorsiflexes ankle

49

Extensor hallucis longus - Innerv

Deep fibular N

50

Extensor digitorum longus - Action

Extends digits II-V; dorsiflexes ankle (aids in everting pes)

51

Extensor digitorum longus - Innerv

Deep fibular N

52

Fibularis tertius - Action

Everts pes; dorsiflexes ankle

53

Fibularis tertius - Innerv

Deep fibular N

54

Fibularis longus - Action

Plantarflexes ankle; everts pes

55

Fibularis longus - Innerv

Superf. Fibular N

56

Fibularis brevis - Action

Plantarflexes ankle; everts pes

57

Fibularis Brevis - Innerv

Superf. Fibular N

58

Muscle group - Anterior thigh - Action

Flex hip; extend knee

59

Muscle group - Medial thigh - Action

Flex hip; adduct hip

60

Muscle group - Lateral thigh rotators - Action

Laterally rotate hip; adduct hip

61

Muscle group - Superior Gluteal - Action

Addict hip; medially rotate hip

62

Muscle group - Inferior Gluteal - Action

Extend thigh; laterally rotate thigh

63

Muscle group - Posterior thigh - Action

Extend hip; flex knee

64

Muscle group - Posterior crural - Action

Plantarflex ankle; flex digits II-V; flex digit I; invert foot

65

Muscle group - Anterior crural - Action

Dorsiflex ankle; extend digits II-V; extend digit I; invert foot

66

Muscle group - Lateral crural - Action

Evert foot; plantarflex ankle

67

Muscle group - Dorsal pes - Action

Extend digits II-V; extend digit I; adduct digits

68

Muscle group - Plantar pes - Action

Extend digits II-V; flex digit I (pollex); Abduct digits I and V; abduct digits