MOINA Muscles of the Posterior Fascial Compartment of the Thigh

Question 1

long head biceps femoris

Answer 1

origin: long head from ischial tuberosity
insertion: head of fibula

nerve: tibial portion of sciatic nerve

flexes and laterally rotates leg at knee joint; extends thigh at hip joint

Question 2

short head of biceps femoris

Answer 2

origin: linea aspera, lateral supracondylar ridge of femur
insertion: head of fibula

nerve: common peroneal portion of sciatic nerve

flexes and laterally rotates leg at knee joint

Question 3

semitendinosus

Answer 3

origin: ischial tuberosity
insertion: upper part of medial surface of shaft of tibia

nerve: tibial portion of sciatic nerve

flexes and medially rotates leg at knee joint; extends thigh at hip joint

Question 4

semimembranosus

Answer 4

origin: ischial tuberosity
insertion: medial condyle of tibia

nerve: tibial portion of sciatic nerve

flexes and medially rotates leg at knee joint; extends thigh at hip joint

Question 5

adductor magnus (hamstring portion)

Answer 5

origin: ischial tuberosity
insertion: adductor tubercle of femur

nerve: tibial portion of sciatic nerve

extends of thigh at hip joint