test 4 posterior thigh

Question 1

Semitendinosus origin

Answer 1

Ischial tuberosity

Question 2

Semitendinosus insertion

Answer 2

Medial surface of superior part of tibia

Question 3

Semitendinosus innervation

Answer 3

Tibial division of sciatic nerve (L5, S1, S2)

Question 4

Semitendinosus action

Answer 4

Extend thigh; flex leg and rotate it medially when knee is flexed; when thigh and leg are flexed, can extend trunk

Question 5

Semimembranosusorigin

Answer 5

Ischial tuberosity

Question 6

Semimembranosus insertion

Answer 6

Posterior part of medial condyle of tibia; reflected attachment forms oblique popliteal ligament (to lateral femoral condyle

Question 7

Semimembranosus innervation

Answer 7

Tibial division of sciatic nerve (L5, S1, S2)

Question 8

Semimembranosus action

Answer 8

Extend thigh; flex leg and rotate it medially when knee is flexed; when thigh and leg are flexed, can extend trunk

Question 9

Biceps femoris,
long and short heads
origin

Answer 9

Long head: ischial tuberosity

Short head: linea aspera and lateral supracondylar line of femur

Question 10

Biceps femoris,
long and short heads
insertion

Answer 10

Lateral side of head of fibula; tendon is split at this site by fibular collateral ligament of knee

Question 11

Biceps femoris,
long and short heads
innervation

Answer 11

Long head: tibial division of sciatic nerve (L5, S1, S2)

Short head: common fibular division of sciatic nerve (L5, S1, S2)

Question 12

Biceps femoris,
long and short heads
action

Answer 12

Flexes leg and rotates it laterally when knee is flexed; extends thigh (e.g., when starting to walk)