Superficial and deep venous drainage

Question 1

What serves as the boundary between superficial and deep veins

Answer 1

the deep fascia. Superficial veins are in the superficial fascia and follow cutaneous nerve branches. Deep veins cannot be palpated and follow arteries.

Question 2

Do superficial and deep veins have valves?

Answer 2

Yes, and deep veins tend to have more. Valves prevent flow in reverse direction.

Question 3

What type of veins link the superficial and deep venous system

Answer 3

communicating or perforating veins

Question 4

Where is most blood carried

Answer 4

in the deep system

Question 5

Two or more veins that accompany an artery are called.

Answer 5

venae comitantes

Question 6

what are the benefits of venae comitantes

Answer 6

counter current heat exchange and arteriovenous pump

Question 7

what major arteries do NOT have venae comitantes

Answer 7

femoral , deep femoral, popliteal

Question 8

What functions together to convey blood to the heart

Answer 8

venous valves and muscular contractions

Question 9

At rest, valves are _______

Answer 9

closed

Question 10

When a muscle contracts, superior valve is ____ and inferior valve is ______

Answer 10

opened, closed

Question 11

What is the dorsal venous system

Answer 11

superficial system, starts with (proper)dorsal digital veins and ends with great and small saphenous veins

Question 12

The deep venous system

Answer 12

veins that accompany dorsalis pedis and its branches

Question 13

Plantar venous system: superficial

Answer 13

extremely superficial, subdermal mesh, intradermal. Joins the dorsal system on the medial and lateral borders of the foot.

Question 14

Plantar venous system- deep system-

Answer 14

veins accompany the medial and lateral plantar arteries and branches.

Question 15

How is blood directed in the leg

Answer 15

from superficial to deep veins. Perforating veins have valves.

Question 16

On the way from the leg towards the heart, what can occur

Answer 16

due to the absence of valves in perforating pedal veins, blood can be bi-directional on its way up the leg towards the heart

Question 17

When valves are present in perforating pedal veins, how does blood travel

Answer 17

from deep to superficial on its way up the leg towards the heart

Question 18

when valves are incompetent and blood in deep system flows back into the superficial system. This causes superficial veins to become distended and tortuous.

Answer 18

varicose veins

Question 19

Thrombosis

Answer 19

formation of a blood clot within a vessel

Question 20

Deep vein thrombosis

Answer 20

originate in lower limb, causes: venous stagnation, venous injury, tendency towards blood clot formation.
complication: if thrombosus breaks away and travels, can reach pulmonary trunk

Question 21

what is the route of thromboembolism that originated in the popliteal vein to the pulm trunk

Answer 21

popliteal vein, femoral vein, external illiac, common illac, IVC, right atrium, right ventricle, pulmonary trunk

Question 22

small saphenous dumps blood into

Answer 22

popliteal vein

Question 23

great saphenous dumps into

Answer 23

saphenous opens and joins femoral vein

Question 24

pathway of veins

Answer 24

dorsal digits, dorsal metatarsal, venous arch, medial marginal vein, great saphenous vein, femoral vein

Question 25

which veins have more valves

Answer 25

deep veins