Lecture - CVS (Bevin's Intro to CVS)

Question 1

Why do you have a CV system? What are the 3 basic reasons?

Answer 1

Provide, remove and transport

Question 2

Can the left and right heart work if far apart?

Answer 2

They sure can

Question 3

1. What are the 3 main components of the CVS system?
2. Describe the little things from arteries to arterioles etc
3. How much blood do you have in your body?

Answer 3

1. Heart and BV
2. Arts - arterioles - caps - venules - veins
3. 4-6

Question 4

Okay pulmonary circulation:

1. Carries blood from where to where?
2. What does the right ventricle pump the blood to- what’s the name of the vessel?
3. What do pulmonary capillaries do?
4. What does the pulmonary venous have a high content of?
5. Why is pulmonary ciruclation a good thing for the lungs? (compete….)
6. The lungs are close to the heart, and the pulmonary vasculature has a very low resistance to flow - what does this mean in terms of the circuit’s energy?

Question 5

Systemic circulation:

1. It carries blood from where to where?
2. Left ventricle pumps blood into what vessel?
3. So in the tissue capillaries, what is off-loaded and what is picked up?
4. Systemic venous blood has a low content of what?

Question 6

Where are the bronchial arteries? What do they supply?

Answer 6

-

Question 7

Does all the right heart output go through pulmonary ciruclation?

Question 8

Is the systemic ciruclation in series or parallel? WHat does that mean?

Answer 8

Only some of the cardiac output circulation through any one tissue at a give time

All of it doesnt go through each part - only some of it. Not competing for O2 (Hope liver doesnt take all the oxygen before it gets to renal)

Question 9

What are two things in the systemic circulation that are in series and not parallel?

Answer 9

-

Question 10

So having the systemic ciruclation in parallel makes physiologlcal sense because what 2 reasons?

Question 11

In some organs, he blood flow correlates with the oxygen consumption- what three doesnt it correlate?

Answer 11

=

Question 12

What’s flow autoregulation and what is an organ that has this?

Answer 12

;

Question 13

1. Where is blood stored? Aka the highest volume of blood is found where?
2. So we called veins and venules c____ vessels

Question 14

Pressure

Describe the pressure changes in ventricles, arteries, arterioles, caps, venules and veins - why the changes?

Question 15

Describe the number and diameter of the ateries as you go from aorta to arteries to arterioes and capilliaries

What abot the venous system? Are there more venules than arterioles? Why’s that

Answer 15

More veins bc some superficial too

Question 16

Is the total cross-sectional area of the aort higher or the arterioles/caps combined? What about TCA of the venules/veins - higher than arteries and veins?

Answer 16

So the TCA keeps getting higher until the peak of caps then drops down but the veins still have higher TCA than arteries so the velocity in the veins is lower

Question 17

Bloow flow velocity

1. Is the blood flow or the blood velocty the same in all parts of the CVS?
2. Describe the velocity through the aorta, arteries, caps and veins

Answer 17

Aorta 0 to 150 and then arteries slows down and then caps slows down and then veins speeds up again but still slower than artiers