Knee and Leg

Question 0

What is the superomedial border of the popliteal fossa?

Answer 0

semimembranosus

Question 1

What is the superolateral border of the popliteal fossa?

Answer 1

biceps femoris

Question 2

What are the inferolateral and inferomedial borders of the popliteal fossa?

Answer 2

lateral and medial heads of the gastrocnemius

Question 3

What is the roof of the popliteal fossa?

Answer 3

skin and popliteal fascia posteriorly

Question 4

What is the floor of the popliteal fossa?

Answer 4

popliteal surface of the femur, posterior capsule of the knee joint, and the popliteus fascia covering the popliteus muscle

Question 5

What are the contents of the popliteal fossa?

Answer 5

termination of small saphenous vein, popliteal artery and vein, tibial and common fibular nerves, posterior cutaneous nerve of thigh, popliteal lymph nodes, and fat

Question 6

What is the course of the popliteal artery?

Answer 6

continuation of femoral artery; ends by dividing into anterior and posterior tibial arteries

Question 7

What does the popliteal artery supply?

Answer 7

hamstring, gastrocnemius, soleus, and plantaris

Question 8

Where does the sciatic nerve end?

Answer 8

superior angle of popliteal fossa by dividing into tibial and common fibular nerve

Question 9

What does the sural nerve innervate?

Answer 9

skin on the posterior and lateral aspects of the leg and lateral side of the foot

Question 10

What is the nerve of the anterior compartment of the leg?

Answer 10

deep fibular nerve

Question 11

What supplies structures of the anterior compartment of the leg?

Answer 11

anterior tibial artery

Question 12

Where does the dorsalis pedis artery arise?

Answer 12

continuation of anterior tibial artery at ankle joint

Question 13

What are the muscles of the lateral compartment of the leg?

Answer 13

fibularis longus and brevis

Question 14

What is the nerve of the lateral compartment of the leg?

Answer 14

superficial fibular nerve

Question 15

What does the superificial fibular nerve innervate?

Answer 15

fibularis longus and brevis, skin on distal part of anterior leg and dorsum of foot

Question 16

What nerve innervates the posterior compartment of the leg?

Answer 16

tibial nerve

Question 17

What supplies the posterior compartment of the leg?

Answer 17

posterior tibial and fibular vessels

Question 18

What makes up the superficial group of plantarflexors?

Answer 18

gastrocnemius, soleus, and plantaris

Question 19

What makes up the triceps surae?

Answer 19

gastrocnemius and soleus

Question 20

What are the main actions of the triceps surae?

Answer 20

elevates the heel and depresses the forefoot

Question 21

What is the most superficial muscle in the posterior compartment of the leg?

Answer 21

gastrocnemius

Question 22

When does the gastrocnemius act maximally?

Answer 22

when knee is extended and combined with dorsiflexion

Question 23

Where does the popliteal artery and tibial nerve exit the popliteal fossa?

Answer 23

through the tendinous arch of soleus

Question 24

What makes up the deep group in the posterior compartment of the leg?

Answer 24

popliteus, flexor digitorum longus, flexor hallucis longus, and tibialis posterior

Question 25

What is the function of the popliteus?

Answer 25

unlocks the fully extended knee joint

Question 26

What is the deepest muscle of the deep group of the posterior compartment of the leg?

Answer 26

tibialis posterior

Question 27

What does the sural nerve innervate?

Answer 27

skin of the lateral and posterior part of the inferior 1/3 of leg and lateral foot

Question 28

What forms the sural nerve?

Answer 28

medial sural cutaneous nerve and sural communicating branch of the common fibular nerve