Lecture 19, Venous Drainage & Arteries of The Lower Limb

Question 1

Superficial venous drainage

Answer 1

are in the subcutaneous tissue, they eventually drain into the deep veins and the two major superficial veins are in the great and small saphenous veins

Question 2

Great saphenous vein

Answer 2

is formed by the union of the dorsal digital vein of the great toe and the dorsal venous arch of the foot (empties into the femoral vein)

Question 3

Small saphenous vein

Answer 3

arises on the lateral side of the foot from the union of the dorsal digital vein of the 5th digit with the dorsal venous arch (empties into the popliteal vein in the popliteal fossa)

Question 4

Dorsal venous arch

Answer 4

The dorsal venous arch of the foot is a superficial vein that connects the small saphenous vein and the great saphenous vein

Question 5

Deep venous drainage

Answer 5

the deep veins in the lower limb accompany the major arteries and their branches as well, are deep to the the deep fascia and accompany the major arteries
- the deep vein from the leg flows into the popliteal vein posterior to the knee, which becomes the femoral vein joining the terminal portion of the femoral vein. The femoral vein passes deep to the inguinal ligament to become the external iliac vein in the pelvic

Question 6

Femoral artery

Answer 6

is the main blood supply to the lower limb, is the continuation of the external iliac artery distal to the inguinal ligament

Question 7

Profunda femoris artery

Answer 7

(major branch - deep artery of thigh) - serves the posterior and lateral aspects of the thigh

Question 8

Popliteal artery

Answer 8

comes to be near adductor hiatus from the femoral artery (the femoral artery continues through the anterior compartment of the thigh, passing through the adductor hiatus to the popliteal region, posterior to the knee)

Question 9

Anterior tibial artery

Answer 9

ending midway between the malleoli of the ankle, where it becomes the dorsalis pedis artery (the popliteal artery pass through the fossa and becomes the anterior tibial artery with posterior tibial artery, courses through the anterior compartment of the leg)

Question 10

Posterior tibial artery

Answer 10

courses through the deep posterior the deep posterior compartment of the leg and then posterior to the medial malleolus, dividing into medial and lateral plantar arteries at the sole of the foot

Question 11

Obturator artery

Answer 11

usually a branch of the internal iliac artery, supplies the medial compartment of the thigh

Question 12

External iliac artery

Answer 12

The external iliac artery is the main blood supply to the lower limb as it continues down into the thigh as the femoral artery at the level of the inguinal ligament

Question 13

Perforating arteries

Answer 13

the perforating arteries, usually three in number, are so named because they perforate the tendon of the Adductor magnus to reach the back of the thigh