CVT 101 Vascular Anatomy

Question 0

What is the function of the portal system?

Answer 0

The portal system screens what you ingest before it goes into the systemic circulation.

Question 1

what is the three circulatory circuits?

Answer 1

Systemic
pulmonary
portal

Question 2

what is the function of the pulmonary system?

Answer 2

lung circulation

Question 3

What is the function of the systemic circulation?

Answer 3

whole body circulation

Question 4

What is renal function?

Answer 4

kidney circulation/filter

Question 5

what starts and ends as capillaries instead of arteries and veins?

Answer 5

portal system - begins and ends as capillaries.

Question 6

Whaich might be considered a fourth circulatory circuit?

Answer 6

renal

Question 7

portal system

Answer 7

begins and ends as capillaries connects digestive loop with liver, hepatic vein, and IVC. RBC hemoglobin cycle

Question 8

five types of vessels

Answer 8

artery
arterioles 
capillaries
Venules
veins

Question 9

Which contains most of the blood volume?

Answer 9

64% venules, veins, and vena vavae

2/3 to 3/4 of blood volume

Question 10

which type of vessel consists of only one layer of endothelial cells?

Answer 10

capillaries

Question 11

Veins have approximately how much more CSA than arteries at the same level?

Answer 11

Total CSA about it times that of corresponding arteries.

Question 12

Across which vessels does the greatest pressure drop occur?

Answer 12

arterioles

Question 13

What is a vaso vasorum?

Answer 13

blood supply to the vascular tissue

Question 14

what are the three layers of vessel walls?

Answer 14

1. Tunica intima: smooth inner lining of vessels; single layer of endothelial cells Normally has anti-clotting, anti-platelet properties; interruption of these may start most vascular disease— both atherosclerosis and thrombosis
2. Tunica media: middle layer with smooth muscle cells, elastin, and collagen Composition of this layer determines the vessels’ mechanical properties
3. Tunica adventitia: outer layer made up of connective tissue

Question 15

What is the relative proportion of elastic to smooth muscle tissue in the media in proximal arteries vs. distal arteries?

Answer 15

So proximal to arteries the more elasticity you have and less smooth muscle and the more distal you go less elasticity there is and more smooth muscle.
why?

Question 16

what is the effect of sympathetic nerve activity on arterioles?

Answer 16

is to contract them.