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Pelvis and Lower Limb > Lower Limb Model > Flashcards

Lower Limb Model Flashcards

1
Q

1

a. action
b. innervation

A

Iliacus Muscle

a. stabilizes and flexes thigh (at hip joint)
b. femoral nerve (L2 and L3)

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2
Q

2

a. action
b. innervation

A

Psoas major muscle

a. stabilizes and flexes thigh (at hip joint)
b. ventral rami of lumbar nerves (L1, L2, L3)

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3
Q

3

a. action
b. innervation

A

tensor fascia latae muscle

a. abducts, flexes, and medially rotates thigh
- helps keep knee extended
- steadies trunk on thigh
b. superior gluteal n (L4 and L5)

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4
Q

4

A

Iliotibial tract

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5
Q

6

a. action
b. innervation

A

Gluteus medius muscle

a. abducts and medially rotates thigh; keeps pelvis level (when opposite leg is raised)
b. superior gluteal nerve (L5 and S1)

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6
Q

7

a. action
b. innervation

A

Gluteus minimus muscle

a. abducts and medially rotates thigh; keeps pelvis level (when opposite leg is raised)
b. superior gluteal nerve (L5 and S1)

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7
Q

8

a. action
b. innervation

A

Obturator internus muscle
a. abducts the flexed thigh;
laterally rotates the extended thigh; keeps head of femur in acetabulum
b. Nerve to obturator internus

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8
Q

9

a. action
b. innervation

A

Piriformus muscle
a. abducts the flexed thigh;
laterally rotates the extended thigh; keeps head of femur in acetabulum
b. Nerve to piriformis (S1 and S2)

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9
Q

10

a. action
b. innervation

A

Superior gemellus muscle
a. abducts the flexed thigh;
laterally rotates the extended thigh; keeps head of femur in acetabulum
b. same as Nerve to obturator internus

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10
Q

11

a. action
b. innervation

A

Inferior gemellus muscle
a. abducts the flexed thigh;
laterally rotates the extended thigh; keeps head of femur in acetabulum
b. same as Nerve to quadratis femoris

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11
Q

12

a. action
b. innervation

A

Quadratus femoris muscle

a. laterally rotates thigh, keeps head of femur in acetabulum
b. Nerve to quadratus femoris

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12
Q

13

a. action
b. innervation

A

Sartorius muscle

a. abducts, flexes, and laterally rotates the thigh
b. femoral nerve

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13
Q

14

a. action
b. innervation

A

Rectus femoris muscle

a. action: extend leg; steadies hip joint, helps iliopsoas to flex thigh
b. innervation: femoral nerve

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14
Q

15

A

Vastus medialis muscle

a. action: extend leg
b. innervation: femoral nerve

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15
Q

17

A

Vastus lateralis muscle

a. action: extend leg
b. innervation: femoral nerve

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16
Q

18

a. main action
b. innervation

A

Pectineus muscle

a. adducts and flexes thigh; medially rotates thigh
b. femoral nerve (and oburator nerve)

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17
Q

19

a. action
b. innervation

A

Adductor longus muscle

a. adducts thigh
b. obturator nerve (from anterior division)

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18
Q

20

a. action
b. innervation

A

Gracilis muscle

a. adducts thigh; flexes and rotates leg medially
b. oburator nerve

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19
Q

21

A

Adductor brevis muscle

a. adducts thigh (also can flex it)
b. obturator nerve (from anterior division)

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20
Q

25

a. action
b. innervation

A

Long head of biceps femoris muscle

a. extends thigh; flexes and rotates leg laterally (when knee is flexed)
b. tibial nerve

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21
Q

26

a. action
b. innervation

A

Short head of biceps femoris muscle

a. extends thigh; flexes and rotates leg laterally (when knee is flexed)
b. common peroneal nerve

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22
Q

27

a. action
b. innervation

A

Semitendinosus muscle

a. extends thigh; flexes and rotates leg medially (when knee is flexed)
b. tibial nerve

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23
Q

28

a. action
b. innervation

A

Semimembranosus muscle

a. extends thigh; flexes and rotates leg medially (when knee is flexed)
b. tibial nerve

24
Q

29

a. action
b. innervation

A

Tibialis anterior muscle

a. dorsiflexes ankle; inverts foot
b. deep peroneal nerve (L4 and L5)

25
Q

30

a. action
b. innervation

A

Extensor digitorum longus muscle

a. extends lateral 4 digits; dorsiflexes ankle
b. deep peroneal nerve (L5 and S1)

26
Q

31

a. action
b. innervation

A

Extensor hallucis longus muscle

a. extends big toe; dorsiflexes ankle
b. deep peroneal nerve (L5 and S1)

27
Q

32

a. action
b. innervation

A

Fibularis longus muscle

a. everts foot and weakly plantarflexes the ankle
b. superficial peroneal nerve

28
Q

33

a. action
b. innervation

A

Fibularis brevis muscle

a. everts foot and weakly plantarflexes the ankle
b. superficial peroneal nerve

29
Q

34 and 35

a. action
b. innervation

A

34 - Medial head of gastrocnemius muscle
35 - Lateral head

a. plantarflexes ankle (when knee is extended), raises heel during walking, flexes leg at knee joint
b. tibial nerve

30
Q

36

a. action
b. innervation

A

Plantaris muscle

a. weakly assists gastrocnemius in plantarflexing ankle and flexing knee
b. tibial nerve

31
Q

37

a. action
b. innervation

A

Soleus muscle

a. plantarflexes ankle, steadies leg on foot
b. tibial nerve

32
Q

38

A

Calcaneal Tendon

33
Q

39

a. action
b. innervation

A

Popliteus muscle

a. weakly flexes knee and unlocks it
b. tibial nerve

34
Q

40

a. action
b. innervation

A

Flexor digitorum longus muscle

a. flexes lateral 4 digits and plantarflexes the ankle; supports longitudinal arches of foot

35
Q

41

a. action
b. innervation

A

Flexor hallucis longus muscle

a. flexes great toe and weakly plantarflexes ankle; supports medial longitudinal arches of the foot
b. tibial nerve

36
Q

60

A

Inguinal ligament

37
Q

61

A

Interpubic disc (Pubic Symphysis)

38
Q

64

A

Sacrospinous ligament

39
Q

65

A

Sacrotuberous ligament

40
Q

76 and 77

A

Medial and Lateral malleolus

41
Q

78

A

Superior Extensor Retinaculum

42
Q

79

A

Flexor retinaculum

43
Q

81

A

Calcaneus

44
Q

84

A

Common iliac artery

45
Q

85

A

Common iliac vein

46
Q

91

a. origin
b. course
c. distribution

A

Obturator artery

a. internal iliac artery
b. through obturator foramen, medial compartment of thigh, divides into anterior/posterior branches
c. obturator externus, pectineus, adductors of thigh, gracilis

47
Q

92

A

Obturator nerve

48
Q

93

A

Femoral nerve

49
Q

94

a. origin
b. course
c. distribution

A

Femoral artery

a. continues from external iliac artery
b. descends through femoral triangle, transverses adductor canal, and changes to “popliteal artery” at the adductor hiatus
c. supplies anterior and anteromedial surface of thigh

50
Q

95

A

Femoral vein

51
Q

96

A

Sciatic nerve

52
Q

98

A

Inferior gluteal nerve

53
Q

99

a. course
b. distribution

A

Inferior gluteal artery

a. enters gluteal region through the greater sciatic foramen, descends on medial side of sciatic nerve, anastamoses with superior gluteal artery and involved in cruciate anastamosis of thigh
b. supplies gluteus maximus, obturator internus, quadratus femoris, and superior hamstrings

54
Q

100

a. course
b. distribution

A

Internal pudendal artery

a. enters gluteal region through greater sciatic foramen; descends posterior to ischial spine, enters perineum through lesser sciatic foramen
b. supplies external genitalia and muscles in the perineal region (does not supply gluteal region)

55
Q

101

A

Pudendal nerve

Pelvis and Lower Limb (10 decks)

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