Posterior Thigh And Popliteal Fossa

Question 1

What are the muscle of the posterior thigh

Answer 1

The hamstrings

Question 2

What are the three hamstrings

Answer 2

Semimembranosus, semitendinosus and biceps femoris

Question 3

Characteristic of semimebmranosus

Answer 3

Has a membranous appearence and tendon at the proximal end

Question 4

Characteristic of semitendinosus

Answer 4

Has a large tendon

Question 5

Characteristic of biceps femoris

Answer 5

Has two heads

Question 6

What joint(s) do the hamstrings cross

Answer 6

The knee and hip joints

Question 7

Functions of the hamstrings

Answer 7

Extension of the hip and flexion of the knee

Question 8

What is the common attachment point of the hamstrings

Answer 8

The ischial tuberosity

Question 9

Insertion of semitendinosus

Answer 9

The medial surface of the superior tibia

Question 10

Innervation of semimembranosus

Answer 10

Tibial division of the sciatic nerve (L5-S2)

Question 11

Insertion of semimembranosus

Answer 11

The posterior surface of the medial condyle of the tibia

Question 12

Innervation of semimembranosus

Answer 12

The tibial division of the sciatic nerve (L5-S2)

Question 13

What hamstring is on the medial aspect of the thigh

Answer 13

Semimembranosus

Question 14

Attachment of biceps femoris

Answer 14

Long head - ischial tuberosity

Short head - linea aspera and the lateral supracondylar line of the femur

Question 15

Insertion of biceps femoris

Answer 15

The head of the fibula

Question 16

Innervation of biceps femoris

Answer 16

Long head - tibial division of the sciatic nerve (L5-S2)

Short head - common peroneal division of the sciatic nerve (L5-S2)

Question 17

What causes lateral rotation when the knee is flexed

Answer 17

Biceps femoris

Question 18

What causes medial rotation when the knee is flexed

Answer 18

Semimembranosus, semitendinosus, gracilis and sartorius

Question 19

When are the hamstrings most active

Answer 19

Swinging the leg towards the heel strike

Question 20

What type of contraction do the hamstrings undergo to slow the leg down

Answer 20

Eccentric contraction

Question 21

What is the sciatic nerve composed of

Answer 21

Anterior rami of L4-S3

Question 22

What does the sciatic nerve run deep to

Answer 22

The long head pf biceps femoris

Question 23

What are the branches of the sciatic nerve

Answer 23

Tibial and common peroneal

Question 24

Where does the split of the sciatic nerve normally occur

Answer 24

In the posterior compartment of the thigh

Question 25

What is the roof of the popliteal fossa composed of

Answer 25

Depp fascia, subcutaneous fat and skin

Question 26

What pierces the popliteal fossa

Answer 26

The sural nerve and the short saphenous vein

Question 27

What is the sural nerve composed of

Answer 27

Fibres from the tibial and common peroneal nerves

Question 28

What does the sural nerve supply

Answer 28

The skin on the leg and some of the foot

Question 29

What is the superior boundary of the popliteal fossa

Answer 29

The diverging tendons of the hamstrings

Question 30

What is the lateral boundary of the popliteal fossa

Answer 30

The biceps femoris

Question 31

What is the medial boundary of the popliteal fossa

Answer 31

Semimembranosus and semitendinosus

Question 32

What is the inferior boundary of the popliteal fossa

Answer 32

The medial and lateral heads of gastrocnemius

Question 33

What are the contents of the popliteal fossa

Answer 33

Popliteal artery, popliteal vein and the terminal branches of the sciatic nerve

Question 34

Within the popliteal fossa what division of the sciatic nerve runs more medially

Answer 34

The tibial nerve

Question 35

What is the floor of the popliteal fossa composed of

Answer 35

The popliteal surface of the femur, capsule of the knee joint and the popliteus muscle

Question 36

What is the ligament involved in the popliteal fossa

Answer 36

Oblique popliteal

Question 37

What is the oblique popliteal ligament an extension of

Answer 37

The semimebranous

Question 38

Function of the oblique popliteal ligamnet

Answer 38

Reinforce the knee joint capsule

Question 39

What vessels are found within the fossa

Answer 39

The middle genicular vessels

Question 40

What do the middle genicular vessels supply

Answer 40

The cruciate ligaments

Question 41

What is the popliteal artery a continuation of

Answer 41

The femoral artery

Question 42

Where does the popliteal artery run from/to

Answer 42

The adductor hiatus to the inferior border of popliteus

Question 43

What branches does the popliteal artery give

Answer 43

5 genicular banches

Question 44

What are the terminal branches of the popliteal artery

Answer 44

Anterior tibial and posterior tibial artery

Question 45

What are the 5 genicular arteries

Answer 45

Medial superior, lateral superior, middle, lateral inferior and medial inferior genicular arteries