Thigh Muscles Flashcards

1
Q

What is the origin of the iliopsoas?

L7 S14

A

Iluacus portion:
-alae of sacrum

Psoas major portion:
-lateral bodies and transverse processes of lumbar vertebrae

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2
Q

What is the insertion of the iliopsoas?

L7 S14

A

Lesser trochanter of femur

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3
Q

What are the actions of the iliopsoas?

L7 S15

A
  • flexion and internal rotation of hip

- extension an lateral bending of lumbar vertebrae (psoas major portion)

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4
Q

What is the innervation of the iliopsoas?

L7 S15

A

Iliacus portion:
-femoral nerve

Psoas major portion:
-directly from L1-3

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5
Q

What is the origin of the sartorius?

L7 L16

A

ASIS

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6
Q

What is the insertion of the sartorius?

L7 S16

A

Upper, medial tibia

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7
Q

What is the action of the sartorius?

L7 S16

A
  • flexion, abduction and external rotation of the hip

- flexion and internal rotation of the knee

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8
Q

What is the innervation of the sartorius?

L7 S16

A

Femoral nerve

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9
Q

What is the origin of the pectineus?

L7 S19

A

Pectineal line of pubis (superior ramus)

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10
Q

What is the insertion of the pectineus?

L7 S19

A

Upper half of pectineal line of femur

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11
Q

What is the action of the pectineus?

L7 S19

A

-flexion, adduction, and internal rotation of the hip

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12
Q

What is the innervation of the pectineus muslce?

L7 S19

A

Femoral nerve

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13
Q

What is the origin of the rectus femoris?

L7 S22

A
  • AIIS

- posterosuperior rim of acetabulum

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14
Q

What is the insertion of the rectus femoris?

L7 S22

A

Tibial tuberosity (via patellar tendon)

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15
Q

What is the action of the rectus femoris?

L7 S22

A
  • extension of the knee

- flexion of the hip

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16
Q

What is the innervation of the rectus femoris?

L7 S22

A

Femoral nerve

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17
Q

What is the origin of the vastus lateralis?

L7 S24

A

Intertrochanteric line, greater trochanter, gluteal tuberosity, upper lip of linea aspera, and lateral intermuscular septum

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18
Q

What is the insertion of the vastus lateralis?

L7 S24

A

Tibial tuberosity (via patellar tendon)

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19
Q

What is the action of the vastus lateralis?

L7 S24

A

Extension of the knee

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20
Q

What is the innervation of the vastus lateralis?

L7 S24

A

Femoral nerve

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21
Q

What is the origin of the vastus medialis?

A

Intertrochanteric line, greater trochanter medial lip of linea aspera, medial supracondylar line, and medial intermuscular septum

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22
Q

What is the insertion of the vastus medialis?

L7 S25

A

Tibial tuberosity (via patellar tendon)

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23
Q

What is the action of the vastus medialis?

L7 S25

A

Extension of knee

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24
Q

What is the innervation of the vastus medialis?

L7 S25

A

Femoral nerve

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25
Q

What is the insertion of the vastus intermedius?

L7 S26

A

Upper 2/3 of femoral shaft, distal half intermuscular septum, and lateral lip of linea aspera

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26
Q

What is the insertion of the vastus intermedius?

L7 S26

A

Tibial tuberosity (via patellar tendon)

27
Q

What is the action of the vastus intermedius?

L7 S26

A

Extension of knee

28
Q

What is the innervation of the vastus intermedius?

L7 S26

A

Femoral nerve

29
Q

What is the origin of the gracilis?

L7 S41

A
  • body of pubis

- inferior pubic ramus

30
Q

What is the insertion of the gracilis?

L7 S41

A

Upper, medial shaft of tibia

31
Q

What are the actions of the gracilis?

L7 S41

A
  • adduction and flexion of the knee

- assists in internal rotation of tibia

32
Q

What is the innervation of the gracilis?

L7 S41

A

Obturator nerve

33
Q

What is the origin of the adductor longus?

L7 S43

A

Pubic crest and symphysis

34
Q

What is the insertion of the adductor longus?

L7 S43

A

Medial lip of linea aspera

35
Q

What are the actions of the adductor longus?

L7 S43

A

Adduction, flexion and external rotation of thigh

36
Q

What is the innervation of the adductor longus?

L7 S43

A

Obturator nerve

37
Q

What is the origin of the adductor brevis?

L7 S45

A

Body and inferior ramus of pubis

38
Q

What is the insertion of the adductor brevis?

L7 S43

A
  • pectineal line of femur

- upper part of linea aspera

39
Q

What are the actions of the adductor brevis?

L7 S45

A

Adduction, flexion, and internal rotation of hip

40
Q

What is the innervation of the adductor brevis?

L7 S45

A

Obturator nerve

41
Q

What is the origin of the adductor magnus?

L7 S46

A
  • ischial tuberosity

- ischiopubic ramus

42
Q

What is the insertion of the adductor magnus?

L7 S46

A

Gluteal tuberostiy, medial lip of linea aspera, medial supracondylar line, adductor tubercle

43
Q

What is the action of the adductor magnus?

L7 S47

A
  • adduction of hip
  • flexion and internal rotation of hip (upper fibers)
  • extension and external rotation of hip (lower fibers)
44
Q

What is the innervation of the adductor magnus?

L7 S47

A
  • obturator nerve

- tibial branch of sciatic nerve

45
Q

What is the origin of the obturator externus?

L7 S48

A

External pubis and ischium along margin of obturator foramen

46
Q

What is the insertion of the obturator externus?

L7 S48

A

Trocanteric fossa

47
Q

What are the actions of the obturator externus?

L7 S48

A

External rotation of hip

48
Q

What is the innervation of the obturator externus?

L7 S48

A

obturator nerve

49
Q

What is the origin of the biceps femoris longus?

L7 S58

A
  • ischial tuberosity

- lower part of sacrotuberous ligament

50
Q

What is the insertion of he biceps femoris longus?

L7 S58

A
  • lateral head of fibula

- lateral condyle of tibia

51
Q

What are the actions of the biceps femoris longus?

L7 S59

A
  • flexion and external rotation of the knee

- extension of the hip

52
Q

What is the innervation of the biceps femoris longus?

L7 S59

A

Tibial portion of sciatic nerve

53
Q

What is the origin of the biceps femoris brevis?

L7 S60

A
  • lateral lip of linea aspera
  • upper supracondylar line
  • lateral intermuscular septum
54
Q

What is the insertion of the biceps femoris brevis?

L7 S60

A
  • lateral heal of fibula

- lateral condyle of tibia

55
Q

What are the actions of the biceps femoris brevis?

L7 S60

A

Flexion and external rotation of the knee

56
Q

What is the innervation of the biceps femoris brevis?

L7 S60

A

Common perineal portion of sciatic nerve

57
Q

What is the origin of the semimembraosus?

L7 S61

A

Ischial tuberosity and ischial ramus

58
Q

What is the insertion of the semimembranosus?

L7 S61

A

Posteromedial medial tibial condyle

59
Q

What is they action of the semimembranosus?

L7 S61

A
  • flexion and internal rotation of knee

- extension of hip

60
Q

What is the innervation of the semimembranosus?

L7 S61

A

Tibial portion of sciatic nerve

61
Q

What is the origin of the semitendinosus?

L7 S62

A

Ischial tuberosity

62
Q

What is the insertion of the semitendinosus?

L7 S62

A

Upper medial tibia

63
Q

What are the actions of the semitendinosus?

L7 S62

A
  • flexion and internal rotation of the knee

- extension of the hip

64
Q

What is the innervation of the semiteninosus?

L7 S62

A

Tibial portion of sciatic nerve