Hamstrings

Question 1

Biceps Femoris origin, insertion & action

Answer 1

Long head origin is on the ischial tuberosity short head origin is the lateral lip of linea aspera

It inserters on the head of the fibula

And it’s actions are to flex the knee and laterally rotate a flexed knee also to extend the hip and tilt the pelvis posteriorly

Question 2

Origin, insertion and actions for Semitendinosus

Answer 2

It’s origin is the ischial tuberosity

It inserters on medial shaft of the tibia at pes anserinus tendon

It’s actions are to flex the knee and medially rotate a flexed knee also to extend the hip and tilt the pelvis posteriorly

Question 3

Semimembranosus origin, insertion & actions

Answer 3

It’s origin is the ischial tuberosity

It inserts on the posterior aspect of the medial condyle of tibia

It’s actions are to flex the knee and medially rotate a flexed knee and also to extend the hip and tilt the pelvis posteriorly

Question 4

Origin, insertion & actions for Popliteus

Answer 4

It’s origin is the lateral condyle of the femur

It’s insertion is posterior aspect of tibia

It’s actions are to flex the knee and medially rotate a flexed knee