Posterior Thigh and Popliteal Fossa

Question 1

What are the three hamstring muscles?

Answer 1

Biceps femoris
Semitendinous muscle
Semimembranous muscle

Question 2

Origin and insertion of long head of biceps?

Answer 2

Origin - ischial tuberosity

Insertion - head of fibula

Question 3

Origin and insertion of short head of biceps?

Answer 3

Origin - linea aspera of post femur

Insertion - head of fibula

Question 4

What innervates biceps femoris?

Answer 4

Common fibular nerve

Question 5

What movement does biceps femoris allow?

Answer 5

small amount of lat rotation when the knee is flexed

Question 6

Origin and insertion of semitendinous muscle

Answer 6

Origin ischial: tuberosity

insertion : upper ant aspect of proximal tibia

Question 7

Origin and insertion of semiembranous muscle

Answer 7

Origin - ischial tuberosity

Insertion -prox tibia - (higher than semitendinous)

Question 8

Action of the hamstring muscles?

Answer 8

Extension of the lower limb at the hip joint

Flex the lower limb at the knee joint

Question 9

What are the upper boundaries of the polpiteal fossa?

Answer 9

Lateral - biceps femoris

Medial- semitendinous and semimembranous

Question 10

What are the lower boundaries of the polpiteal fossa?

Answer 10

lateral - lateral head of gastrocnemius

medial - medial head

Question 11

Where does the sciatic nerve bifurcate

Answer 11

just before the polpiteal fossa

Question 12

What are the contents of the popliteal fossa

Answer 12

Large amount of fat 
Tibial nerve 
Common fibular nerve
popliteal vein - branch to small saphenous vein 
popliteal artery (deepest)

Question 13

What makes up the roof of the popliteal fossa

Answer 13

SKin and superficial fascia

Question 14

What makes up the floor of the popliteal fossa

Answer 14

Popliteus muscle