Muscles of the posterior compartment of thigh

Question 1

biceps femoris

Answer 1

O: long head: upper part of ischial tuberosity
short head: lateral lip of linea aspera
INS: head of fibula
INN: sciatic nerve
FUN: Lateral rotation and flexion of leg at knee joint + lateral rotation and extension of thigh at hip joint

Question 2

Semitendinosus

Answer 2

O: upper area of ischial tuberosity
INS: medial surface of proximal tibia
INN: sciatic nerve
FUN: flexion and medial rotation of leg at knee joint, medial rotation and extension of thigh at hip joint

Question 3

Semimembranosus

Answer 3

O: superolateral impression of the ischial tuberosity
INS: posterior surface of medial tibial condyle
INN: sciatic nerve
FUN: flexion and medial rotation of leg at knee joint, extension and medial rotation of thigh at hip joint