Muscles of the Posterior Thigh

Question 1

Biceps Femoris

Answer 1

Origin: ischial tuberosity (long head) and posterior/distal femur (short head)
Insertion: proximal fibula and proximal/lateral tibia
Action: extends and medially rotates thigh, flexes knee

Question 2

Semitendinosus

Answer 2

Origin: ischial tuberosity
Insertion: proximal/medial tibia
Action: extends and medially rotates thigh, flexes knee

Question 3

Semimembranosus

Answer 3

Origin: ischial tuberosity
Insertion: proximal/medial tibia
Action: extends and medially rotates thigh, flexes knee