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Anatomy > Thigh muscles > Flashcards

Thigh muscles Flashcards

1
Q

Sartorius origin

A

ASIS

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2
Q

Sartorius insertion

A

Upper medial tibia (per anserinus)

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3
Q

Sartorius action

A

Flex, ER, and abduct (weak) thigh; flex and internally rotate leg

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4
Q

Sartorius innervation and spinal level

A

Femoral L2-3

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5
Q

Rectus femoris origin

A

AIIS and superior rim of acetabulum

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6
Q

Rectus Femoris insertion

A

Patella, then into tibial tuberosity

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7
Q

Rectus femoris action

A

Flex the thigh; extend the leg

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8
Q

Rectus Femoris innervation and spinal level

A

Femoral L2-4

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9
Q

Vastus Lateralis origin

A

Greater trochanter (lateral surface) and lateral lip of linea aspera

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10
Q

Vastus lateralis insertion

A

Patella, then into tibial tuberosity

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11
Q

Vastus lateralis action

A

Extend the leg

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12
Q

Vastus lateralis innervation and spinal level

A

Femoral L2-4

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13
Q

Vastus intermedius origin

A

Anterior surface of the femur

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14
Q

Vastus intermedius insertion

A

Patella, then into tibial tuberosity

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15
Q

Vastus intermedius action

A

Extend the leg

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16
Q

Vastus intermedius innervation and spinal level

A

Femoral L2-4

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17
Q

Vastus medialis origin

A

Medial lip of the linea aspera, intertrochanteric line

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18
Q

Vastus medialis insertion

A

Patella, then into tibial tuberosity

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19
Q

Vastus medialis action

A

Extend the leg

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20
Q

Vastus Medialis innervation and spinal level

A

Femoral L2-4

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21
Q

Tensor vastus intermedius origin

A

Continuous with VI and VL, very proximal anterior femur

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22
Q

Tensor vastus intermedius insertion

A

Aponeurosis of vastus intermedius, then into tibial tuberosity via patella

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23
Q

Tensor vastus intermedius action

A

Tenses aponeurosis

24
Q

Tensor Vastus Intermedius innervation and spinal level

A

Femoral L2-4

25
Q

Biceps femoris origin

A

Long head: ischial tuberosity & sacrotuberous ligament

Short head: middle 1/3 lateral lip of linea aspera, lateral intermuscular septum

26
Q

Biceps femoris insertion

A

Head of fibula

27
Q

Biceps femoris action

A

Extend; externally rotate the thigh (long head only) ; flex and externally rotate the leg (both heads)

28
Q

Biceps femoris innervation and spinal level

A

Sciatic L5-S2
Long head =tibial
Short head= common fibular

29
Q

Semitendinosus origin

A

Ischial tuberosity and sacrotuberous ligament

30
Q

Semitendinosus insertion

A

Upper medial surface of the tibia (pes anserinus) and fascia of the leg

31
Q

Semitendinosus action

A

Extend the thigh; flex and internal rotate leg (may assist IR of the thigh)

32
Q

Semitendinosus innervation and spinal level

A

Sciatic (tibial) L5-S2

33
Q

Semimembranosus origin

A

Ischial tuberosity

34
Q

Semimembranosus insertion

A

Posteromedial side of the medial tibial condyle, fascia, oblique popliteal lig

35
Q

Semimembranosus action

A

Extend the thigh; flex and internally rotate leg (may assist IR of the thigh)

36
Q

Semimembranosus innervation and spinal level

A

Sciatic (tibial) L5-S2

37
Q

Pectineus origin

A

Superior pubic ramus

38
Q

Pectineus insertion

A

Just inferior to lesser trochanter (pectineal line and proximal linea aspera)

39
Q

Pectineus action

A

Adduct; flex; depending on amount of anteversion or retroversion, may IR (more anteverted) or ER (more retroverted)

40
Q

Pectineus innervation and spinal level

A

Femoral L2-3

41
Q

Adductor longus origin

A

Anteromedial aspect of the pubis (superior pubic ramus) and anterior symphysis

42
Q

Adductor longus insertion

A

Middle 1/3 of the medial lip of the linea aspera

43
Q

Adductor longus action

A

Adduct, assist flexion, possible assist internal rotation of the thigh (external rotates thigh at more than 80 flexion)

44
Q

Adductor longus innervation and spinal level

A

Obturator L2-4

45
Q

Adductor brevis origin

A

Outer surface of the inferior pubic ramus

46
Q

Adductor brevis insertion

A

Middle 1/3 of the medial lip of the linea

47
Q

Adductor brevis action

A

Adduct, assist flexion, possible assist internal rotation of the thigh (externally rotates thigh at more than 80 flexion)

48
Q

Adductor brevis innervation and spinal level

A

Obturator L2-3

49
Q

Gracilis origin

A

Inferior pubic ramus

50
Q

Gracilis insertion

A

Upper medial aspect of the tibia (pes anserinus)

51
Q

Gracilis action

A

Adduct, flex thigh; assist leg flexion, and internally rotate flexed leg

52
Q

Gracilis innervation and spinal level

A

Obturator L2-3

53
Q

Adductor magnus origin

A

Inferior pubic ramus, ischial ramus and tuberosity

54
Q

Adductor magnus insertion

A

Adductor portion= linea aspera (medial lip)

Hamstring portion= adductor tubercle

55
Q

Adductor magnus action

A

Adduct, assist internal rotation of the thigh; adductor portion assist thigh flexion, hamstring portion assist thigh extension

56
Q

Adductor magnus innervation and spinal level

A 
Adductor= obturator L2-4
Hamstring= sciatic (tibial) L4

Anatomy (8 decks)

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