Posterior Muscles of the Thigh

Question 1

Semitendinosus

Answer 1

O: ischial tuberosity

I: medial condyle of tibia

A: extension of the thigh, flexion of the leg, medial rotation of flexed leg

In: sciatic nerve - tibial paret

Question 2

Semimembranosus

Answer 2

O: ischial tuberosity

I: medial condyle of tibia

A: extension of the thigh, flexion of the leg, medial rotation of flexed leg

In: sciatic nerve - tibial paret

Question 3

Biceps Femoris (LONG HEAD)

Answer 3

O: ischial tuberosity

I: head of fibula

A: extension of thigh, flexion of leg, and lateral rotation of flexed leg

In: sciatic nerve - tibial part

Question 4

Biceps Femoris (SHORT HEAD)

Answer 4

O: linea aspera of femur and lateral intermuscular spetum

I: head of fibula

A: flexion of leg, lateral rotation of flexed leg

In: sciatic nerve - common peroneal part