Posterior Thigh Muscles

Question 0

Semitendinosus

Insertion

Answer 0

Medial surface of superior part of tibia

Question 1

Semitendinosus

Origin

Answer 1

Ischial tuberosity

Question 2

Semitendinosus

Innervation

Answer 2

Tibial division of sciatic nerve

L5, S1, S2

Question 3

Semitendinosus

Actions

Answer 3

Extend hip joint
Flex knee joint and rotate leg medially when knee is flexed
When hip and knee are flexed, can extend trunkk

Question 4

Semimembranosus

Origin

Answer 4

Ischial tuberosity

Question 5

Semimembranosus

Insertion

Answer 5

Posterior part of medial condyle of tibia

Reflected attachment forms oblique popliteal ligament (to lateral femoral condyle)

Question 6

Semimembranosus

Innervation

Answer 6

Tibial division of sciatic nerve L5, S1, S2

Question 7

Semimembranosus

Actions

Answer 7

Extend hip joint
Flex knee joint and rotate the leg medially when knee is flexed
When hip and knee are flexed, can extend trunk

Question 8

Biceps femoris, long and short heads

Origin

Answer 8

Long-ischial tuberosity

Short-linea aspera and later supracondylar line of femur

Question 9

Biceps femoris

Insertion

Answer 9

Lateral side of fibula

Tendon is split at this site by fibular collateral ligament of knee

Question 10

Biceps femoris

Innervation

Answer 10

Long-tibial division of sciatic nerve L5, S1, S2

Short-common fibular division of sciatic nerve L5, S1, S2

Question 11

Biceps femoris

Actions

Answer 11

Flexes knee and joint and laterally rotates when knee is flexed
Extends hip joint