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Lower Limb > Anterior Thigh Muscles > Flashcards

Anterior Thigh Muscles Flashcards

1
Q

What muscles make up the anterior thigh?

A

Pectineus, iliopsoas, sartorius, and quadriceps femoris

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2
Q

What muscles make up the quadriceps femoris?

A

Rectus femoris, vastus lateralis, vastus intermedius, vastus medialis

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3
Q

What nerve generally innervates the anterior thigh muscles?

A

Femoral nerve

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4
Q

Which muscle is the chief flexor of the hip joint?

A

Iliopsoas

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5
Q

Which muscle is the greatest extensor of the knee joint?

A

Quadriceps femoris

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6
Q

What is the origin of the pectineus?

A

Superior ramis of pubis

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7
Q

Where does the pectineus insert?

A

Pectineal line of femur, just inferior to lesser trochanter

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8
Q

What is the innervation of the pectineus?

A

Femoral nerve (L2, L3)

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9
Q

What action does the pectineus perform?

A

Adducts and flexes hip joint; assits with medial rotaion of the hip

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10
Q

What is the origin of the sartorius?

A

Anterior superior iliac spine and superior part of notch inferior to it

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11
Q

Where does the sartorius insert?

A

Superior part of medial surface of tibia

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12
Q

What is the innervation of the sartorius?

A

Femoral nerve (L2, L3)

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13
Q

What action does the sartorius perform?

A

Flexes, abducts, and laterally rotates hip joint, flexes knee joint

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14
Q

What is the origin of the psoas major?

A

Sides of T12-L5 vertebrae and discs between them; transverse processes of lumbar vertebrae

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15
Q

Where does the psoas major insert?

A

Lesser trochanter of femur

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16
Q

What is the innervation of the psoas major?

A

Anterior rami of lumbar nerves (L1, L2, L3)

17
Q

What action does the psoas major perform?

A

Acts with iliacus to flex and stabilize hip joint; also postural muscle that helps control deviation of trunk and is active during standing

18
Q

What is the origin of the iliacus?

A

Iliac crest, iliac fossa, ala of sacrum, and anterior sacro-iliac ligaments

19
Q

Where does the iliacus insert?

A

Tendon of psoas major, lesser trochanter, and femur distal to it

20
Q

What is the innervation of the iliacus?

A

Femoral nerve (L2, L3)

21
Q

What action does the iliacus perform?

A

Acts with psoas major to flex and stabilize hip joint

22
Q

What is the origin of the rectus femoris?

A

Anterior inferior iliac spine and ilium superior to acetabulum

23
Q

Where does the rectus femoris insert?

A

Quadriceps tendon

24
Q

What is the innervation of the rectus femoris?

A

Femoral nerve (L2, L3, L4)

25
Q

What action does the rectus femoris perform?

A

Extends knee joint, also stabilizes and helps iliopsoas flex the hip joint

26
Q

What is the origin of the vastus lateralis?

A

Greater trochanter and lateral lip of linea aspera

27
Q

Where does the vastus lateralis insert?

A

Quadriceps tendon

28
Q

What is the innervation of the vastus lateralis?

A

Femoral nerve (L2, L3, L4)

29
Q

What action does the vastus lateralis perform?

A

Extends knee joint

30
Q

What is the origin of the vastus medialis?

A

Intertrochanteric line and medial lip of linea aspera

31
Q

Where does the vastus medialis insert?

A

Quadriceps tendon

32
Q

What is the innervation of the vastus medialis?

A

Femoral nerve (L2, L3, L4)

33
Q

What action does the vastus medialis perform?

A

Extends knee joint

34
Q

What is the origin of the vastus intermedius?

A

Anterior and lateral surfaces of shaft of femur

35
Q

Where does the vastus intermedius insert?

A

Quadriceps tendon

36
Q

What is the innervation of the vastus intermedius?

A

Femoral nerve (L2, L3, L4)

37
Q

What action does the vastus intermedius perform?

A

Extends knee joint

Lower Limb (17 decks)

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