Thigh Muscles

Question 1

Rectus Femoris

Answer 1

O - AIIS of ilium (anterior inferior iliac spine)

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee; Flex the hip

Quadriceps

Question 2

Vastus Lateralis

Answer 2

O - Lateral lip of linea aspera of the femur

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee

Question 3

Vastus Medalis

Answer 3

O - Medial lip of liner aspera of femur

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee

Question 4

Vastus Intermedius

Answer 4

O - Anterior and lateral shaft of femur

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee

Question 5

Biceps femoris

Answer 5

O -
Long head: ischial tuberosity
Short head: lateral lip of linea aspera on the femur

I - Lateral head of fibula

A - Flex knee;
extend hip

Question 6

Semimembranosus

Answer 6

O - Ischial tuberosity

I - posterior aspect of medial condyle of tibia

A - flex knee;
extend hip

Question 7

Semitendinosus

Answer 7

O - Ischial tuberosity

I - Proximal, medial shaft of tibia

A - Flex knee;
extend hip

Question 8

Gluteus maximus

Answer 8

O - posterior iliac crest;
posterior sacrum;
posterior coccyx

I - linea aspera of femur;
IT band

A - extend hip;
LR hip

Question 9

Gluteus medius

Answer 9

O - superior, lateral iliac surface

I - greater trochanter of femur

A - abducts hip;
medially rotate hip

Question 10

Gluteus minimus

Answer 10

O - inferior, lateral iliac surface

I - anterior aspect of greater trochanter

A - abducts hip;
medially rotate hip