what is the origin of bicep femoris
long head- ischial tuberosity of pelvis
short head- lower aspect of femur
what is the insertion of bicep femoris
head of fibula
what is the action of all three hamstring muscles
knee flexion
what is the origin of semitendinosus
ischial tuberosity of pelvis
what is the insertion of semitendinousis
medial aspect of medial tibial condyle
what is the origin of semimembranousis
ischial tuberosity of pelvis
what is the insertion semimembranousis
posterior aspect of the medial tibial condyle