Anterior hip and thigh innervation and action

Question 1

Tensor facsia latae

Answer 1

Innervation: L4-L5-S1
Superior gluteal nerve
Action: Stabilizes knee in extension

Question 2

Sartorius

Answer 2

Innervation: L2-L3
Femoral nerve
Action: Flexes thigh at hip joint
Extends leg at knee joint

Question 3

Rectus femoris

Answer 3

Innervation: L2-L3-L4
Femoral nerve
Action: Flexes thigh at hip joint
Extends leg at knee joint

Question 4

Vastus lateralis

Answer 4

Innervation: L2-L3-L4
Femoral nerve
Action: Extends leg at knee joint

Question 5

Vastus intermedius

Answer 5

Innervation: L2-L3-L4
Femoral nerve
Action: Extends leg at knee joint

Question 6

Vastus medialis

Answer 6

Innervation: L2-L3-L4
Femoral nerve
Action: Extends leg at knee joint