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MSK Anatomy > Thigh > Flashcards

Thigh Flashcards

1
Q

Name the muscles in the anterior compartment of the thigh.

A

Iliopsoas, Quadriceps femoris, Sartorius, Pectineus

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2
Q

What 4 muscles make up the quadriceps femoris?

A

vastus lateralis, vastus medialis, vastus intermedus, rectus femoris

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3
Q

What 2 muscles make up the iliopsoas?

A

Psoas major and the iliacus

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4
Q

What is the origin site of the Psoas Major?

A

Lumbar vertebrae

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5
Q

What is the origin site of the iliacus?

A

Iliac fossa

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6
Q

What is the origin site of the vastus lateralis?

A

Greater trochanter and the lateral lip of the linea aspera

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7
Q

What is the origin site of the vastus medialis?

A

intertrochanteric line and the medial lip of linea aspera

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8
Q

What is the origin site of the vastus intermedus?

A

Anterior and lateral surfaces of the femoral shaft

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9
Q

What is the origin site of the rectus femoris?

A

Ilium, just superior the acetebulum

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10
Q

What is the origin site of the sartorius?

A

Anterior superior iliac spine

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11
Q

What is the origin site of the pectineus?

A

pectineal line on the anterior surface of the pelvis

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12
Q

What is the attachment site of the psoas major?

A

Joins with the iliacus and inserts onto the lesser trochanter of the femur

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13
Q

What is the attachment site of the iliacus?

A

Joins with the psoas major onto the lesser trochanter of the femur

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14
Q

What is the attachment site of the vastus medialis?

A

Attach to patella via the patella tendon

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15
Q

What is the attachment site of the vastus laterialis?

A

Attach to patella via the patella tendon

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16
Q

What is the attachment site of the vastus intermedus?

A

Attach to patella via the patella tendon

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17
Q

What is the attachment site of the rectus femoris?

A

Attach to patella via the patella tendon

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18
Q

What is the attachment site of the sartorius?

A

Superior, medial surface of tibia

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19
Q

What are the nerves of the anterior compartment?

A

L1-L3 innervate Psoas Major

Femoral Nerve innervates everything else

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20
Q

What is the attachment site of the pectineus?

A

Pectineal line on the posterior side of the femur

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21
Q

What is the action of the iliopsoas?

A

flexes the lower limb at the hip joint and assists in lateral rotation at the hip joint

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22
Q

What is the action of the vastus lateralis?

A

Extends the knee joint and stabilises the patella

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23
Q

What is the action of the vastus intermedus?

A

Extends the knee joint and stabilises the patella.

24
Q

What is the action of the vastus medialis?

A

Extends the knee joint and stabilises the patella (due to horizontal fibres)

25
Q

What is the action of the rectus femoris?

A

It flexes the leg at the hip joint, and extends at the knee joint

26
Q

What is the action of the sartorius?

A

At the hip joint, it is a flexor, abductor and lateral rotator. At the knee joint, it is also a flexor

27
Q

What is the action of the pectenus?

A

Adduction and flexion at the hip joint.

28
Q

What are the muscles of the posterior compartment?

A

Adductor magnus, adductor longus, adductor brevis, obturator externus, gracillis

29
Q

What is the origin of the adductor magnus?

A

Adductor part - inferior rami of the pubis, rami of ischium

Hamstring part - ischial tuberosity

30
Q

What is the origin of the adductor longus?

A

The pubis

31
Q

What is the origin of the adductor brevis?

A

The body and inferior rami of the pubis

32
Q

What is the origin of the obturator externus?

A

Membrane of the obturator foremen

33
Q

What is the origin of the gracilis?

A

Inferior rami of pubis

34
Q

What is the attachment of the adductor magnus?

A

Adductor part- linea aspera of the femur

Hamstring part - adductor tubercle an the medial supracondylar line of the femur

35
Q

What is the attachment of the adductor longus?

A

Linea Aspera

36
Q

What is the attachment of the adductor brevis?

A

Linea Aspera

37
Q

What is the attachment of the obturator foremen?

A

Posterior of the greater trochanter

38
Q

What is the attachment of the gracillis?

A

Medial surface of tibia

39
Q

What are the nerves of the medial compartment of the thigh?

A

Hamstring of adductor magnus - tibial nerve (L4-S3)

rest is the Obturator nerve (L2-L4)

40
Q

What is the action of the adductor magnus?

A

Adduction of the hip
Adductor part - flexion of thigh
Hamstring - extension of thigh

41
Q

What is the action of adductor longus?

A

Adduction and medial rotation of thigh

42
Q

What is the action of adductor brevis?

A

Adduction of thigh

43
Q

What is the action of obturator foremen?

A

Laterally rotates the thigh

44
Q

What is the action of gracillis?

A

Adduction of the thigh at the hip, and flexion of the leg at the knee

45
Q

What are the muscles of the posterior compartment of the thigh?

A

Biceps femoris, semitendinosus , semimembranosus

46
Q

What are the origins of the biceps femoris?

A

Long head - Ischial tuberosity and the Short head - linea aspera on the posterior surface of the femur

47
Q

What are the origins of the semitendinosus?

A

Ischial tuberosity

48
Q

What are the origins of the semimembranosus?

A

Ischial tuberosity

49
Q

What is the attachment of the biceps femoris?

A

Inserts into the head of the fibulla

50
Q

What is the attachment of the semitendinosus?

A

Medial surface of the tibia

51
Q

What is the attachment of the semimembranosus?

A

Medial tibial condyle

52
Q

What are the nerves of the posterior compartment?

A

Biceps short head - common fibular nerve

Everything else is tibial part of sciatic nerve

53
Q

What is the action of the biceps femoris?

A

Flexion at the knee, extends the leg at the hip and laterally rotates at the hip and knee

54
Q

What is the action of the semitendinosus?

A

Flexion of the leg at the knee joint. Extension of thigh at the hip, Medially rotates the thigh at the hip joint and the leg at the knee joint/

55
Q

What is the action of the semimembranosus?

A

Flexion of the leg at the knee joint. extension of the thigh at the hip. Medially rotates the thigh at the hip joint and the leg at the knee joint.

MSK Anatomy (2 decks)

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