Lecture 2 - Important Concepts

Question 1

Blood flow to individual organs is primarily regulated by changes is what?

Answer 1

Vessel radius

Question 2

In an attempt to win the Tour de France, you infused additional red blood cells (no plasma) immediately before the race. Using only what we’ve talked about so far, what would be the impact on blood flow?

Answer 2

Blood flow would be reduced due to increased viscosity

Question 3

When looking at the cardiovascular system as a single unit, the pressure difference (∆P) across the system is the difference between

Answer 3

the aortic pressure and the right atrium pressure

Question 4

The vessels responsible for regulating blood flow to tissues are the

Answer 4

arterioles

Question 5

The highest resistance to blood flow occurs

Answer 5

between the blood and the endothelial cells

Question 6

What is MAP and CVC

Answer 6

100 mmHg and 0 mmHg

Question 7

What is MAP w/ or w/o gravity?

Answer 7

+100 or -100 mmHg

Question 8

Increased viscosity _______ resistance and ________ velocity

Answer 8

increases resistance
decreases velocity

Question 9

Decreased viscosity _______ resistance and ________ velocity

Answer 9

decreases resistance
increases velocity