Anterior Thigh

Question 1

Tensor Fasciae Latae

Answer 1

Origin: ASIS and anterior part of iliac crest

Insertion: iliotibial tract that attaches to lateral condyle of tibia

Innervation: superior gluteal nerve

Blood Supply: ascending branch of lateral circumflex femoral artery

Action: abducts, medially rotates, and flexes thigh at hip; helps to keep knee extended

Question 2

Sartorius

Answer 2

Origin: ASIS and superior part of notch below it

Insertion: superior part of medial surface of tibia

Innervation: femoral nerve

Blood Supply: femoral artery

Action: abducts, laterally rotates, and flexes thigh; flexes knee joint

Question 3

Rectus Femoris

Answer 3

Origin: AIIS and ilium superior to acetabulum

Insertion: base of patella and to tibial tuberosity via patellar ligament

Innervation: femoral nerve

Blood Supply: profunda femoris and lateral circumflex femoral artery

Action: extends leg at knee and flexes thigh at hip

Question 4

Vastus Medialis

Answer 4

Origin: intertrochanteric line, medial lip of linea aspera

Insertion: base of patella and to tibial tuberosity via patellar ligament

Innervation: femoral nerve

Blood Supply: femoral and profunda femoris arteries

Action: extends leg at knee

Question 5

Vastus Intermedius

Answer 5

Origin: anterior and lateral surfaces of body of femur

Insertion: base of patella and tibial tuberosity via patellar ligament

Innervation: femoral nerve

Blood Supply: lateral circumflex femoral and profunda femoris arteries

Action: extends leg at knee

Question 6

Vastus Lateralis

Answer 6

Origin: greater trochanter and lateral lip of linea aspera

Insertion: base of patella and to tibial tuberosity via patellar ligament

Innervation: femoral nerve

Blood Supply: lateral circumflex femoral and profunda femoris arteries

Action: extends leg at knee joint