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Anatomy > Muscles of the Thigh > Flashcards

Muscles of the Thigh Flashcards

1
Q

What are the 3 compartments of the thigh named by their fascial compartments, and how many are in each group?

A

Anterior (7)
Medial (6)
Posterior (3)

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2
Q

The muscles of the anterior compartment of the thigh are primarily __________ of the hip and ____________ of the knee joint.

A

Flexors, Extensors.

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3
Q

What are the origins of iliopsoas?

A

Psoas and illacus muscles.

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4
Q

What is the insertion of iliopsoas?

A

Lesser trochanter of the femur.

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5
Q

What are the actions of iliopsoas?

A

Flexing and laterally rotate the hip joint.

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6
Q

What innervates iliopsoas?

A

Femoral nerve.

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7
Q

The longest muscle in the body.

A

Sartorius.

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8
Q

What is the origin of satorius?

A

Anterior superior iliac spine.

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9
Q

What is the insertion sartorius?

A

Medial to the tibal tuberosity.

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10
Q

What are the actions of sartorius?

A

Flexion, Abduction, and Externally rotate the hip joint.

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11
Q

What innervates sartorius?

A

Femoral nerve.

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12
Q

A group of four muscles in the anterior compartment of the thigh and is strong extensor muscle of the knee.

A

Quadriceps femoris.

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13
Q

What is the common insertion of the quadriceps?

A

Tibial tuberosity.

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14
Q

What is the origin of Rectus Femoris muscle?

A

Anterior inferior iliac spine.

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15
Q

What is the insertion of rectus femoris?

A

Quadriceps femoris tendon.

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16
Q

What are the actions of rectus femoris?

A

Flexes the hip joint and extends the knee joint.

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17
Q

What is the origin of vastus lateralis?

A

Linea aspera.

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18
Q

What is in the insertion of vastus lateralis?

A

Quadriceps femoris tendon.

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19
Q

What is the action of vastus lateralis?

A

Extends the knee joint.

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20
Q

What is the origin of vastus medialis?

A

Linea.

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21
Q

What is the insertion of vastus medialis?

A

Quadriceps femoris tendon.

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22
Q

What is the action of vastus medialis?

A

Extension of knee joint.

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23
Q

What is the origin of vastus intermedius?

A

Upper 2/3 of the femoral shaft.

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24
Q

What is the insertion of vastus intermedius?

A

Quadriceps femoris tendon.

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25
Q

What is the action of vastus intermedius?

A

Extends the knee joint.

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26
Q

What innervates the quadriceps of the thigh?

A

Femoral nerve.

27
Q

The muscles in the medial compartment of the thigh are primarily _____________ of the hip because of their medial orientation.

A

Adductors.

28
Q

What is the origin of the pectineus?

A

Pectineal line.

29
Q

What is the insertion of pectineus?

A

Proximal femur.

30
Q

What are the actions of the pectineus?

A

Adduction and flexing of the hip joint.

31
Q

What innervates pectineus?

A

Femoral nerve.

32
Q

What is the origin of adductor longus?

A

Pubis.

33
Q

What is the insertion of adductor longus?

A

Linea aspera.

34
Q

What are the actions of adductor longus?

A

Adducts and internally rotates the hip joint.

35
Q

What innervates adductor longus?

A

Obturator nerve.

36
Q

What are the origins of adductor magnus?

A

Adductor part: Ischiopubic ramus

Hamstring part: Ischial tuberosity.

37
Q

What are the insertions of adductor magnus?

A

Adductor part: Linea aspera

Hamstring part: Adductor tubercle.

38
Q

What are the actions of adductor magnus?

A

Adducts and medially rotates the thigh at hip joint.

39
Q

What innervates adductor magnus?

A

Obturator nerve.

40
Q

What is the origin of adductor brevis?

A

Body of pubis and inferior pubic ramus.

41
Q

What is the insertion of adductor brevis?

A

Linea aspera.

42
Q

What are the actions of adductor brevis?

A

Adducts and internally rotates the hip joint.

43
Q

What innervates adductor brevis?

A

Obturator nerve.

44
Q

What is the origin of gracilis?

A

Body and inferior ramus of pubic bone.

45
Q

What is the insertion of gracilis?

A

Pes anserinus.

46
Q

What are the actions of gracilis?

A

Adducts thigh at hip joint and flexes leg at knee joint.

47
Q

What innervates gracilis?

A

Obturator nerve.

48
Q

What is the origin of obturator externus?

A

External surface of obturator membrane.

49
Q

What is the insertion of obturator externus?

A

Trochanteric fossa.

50
Q

What are the actions of obturator externus?

A

Laterally rotates the hips.

51
Q

What innervates obturator externus?

A

Obturator nerve.

52
Q

What is the origin of semitendinosus?

A

Ischial tuberosity.

53
Q

What is the insertion of semitendinosus?

A

Pes anserinus.

54
Q

What are the actions of semitendinosus?

A

Flexes leg at knee joint and extends thigh at knee joint.

55
Q

What innervates semitendinosus?

A

Sciatic nerve.

56
Q

What is the origin of semimembranosus?

A

Ischial tuberosity.

57
Q

What is the insertion of semimembranosus?

A

Medial tibial condyle

58
Q

What are the actions of semimembranosus?

A

Flexes leg at knee joint and extends thigh at knee joint.

59
Q

What innervates semimembranosus?

A

Sciatic nerve.

60
Q

What is the origin of the short head of the biceps femoris?

A

Linea aspera.

61
Q

What is the origin of the long head of the biceps femoris?

A

Ischial tuberosity.

62
Q

What is the insertion of the short and long head of the biceps femoris?

A

Head of fibula.

63
Q

What are the actions of biceps femoris?

A

Knee flexion, High extension, and Lateral rotation of hip and knee.

64
Q

What innervates biceps femoris?

A

Sciatic nerve.

Anatomy (60 decks)

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