Review Sheet
Exercise 5
Cardiovascular Dynamics
Name ___
Lab Time/Date ___
Activity 1 Studying the Effect of Blood Vessel Radius on Blood Flow Rate
1. Explain how the body establishes a pressure gradient for fluid flow. ___
___
2. Explain the effect that the flow tube radius change had on flow rate. How well did the results compare with your prediction?
___
___
3. Describe the effect that radius changes have on the laminar flow of a fluid.___
___
4. Why do you think the plot was not linear? (Hint: Look at the relationship of the variables in the equation.) How well did the results compare with your prediction? ___
___
Activity 2 Studying the Effect of Blood Viscosity on Blood Flow Rate
1. Describe the components in the blood that affect viscosity. ___
___
2. Explain the effect that the viscosity change had on flow rate. How well did the results compare with your prediction?
___
___
3. Describe the graph of flow versus viscosity. ___
__
4. Discuss the effect that polycythemia would have on viscosity and on blood flow. ___
___
___
Activity 3 Studying the Effect of Blood Vessel Length on Blood Flow Rate
1. Which is more likely to occur, a change in blood vessel radius or a change in blood vessel length? Explain why.
___
___
2. Explain the effect that the change in blood vessel length had on flow rate. How well did the results compare with your prediction? ____
___
3. Explain why you think blood vessel radius can have a larger effect on the body than changes in blood vessel length (use the blood flow equation). ___
___
4. Describe the effect that obesity would have on blood flow and why. ___
___
Activity 4 Studying the Effect of Blood Pressure on Blood Flow Rate
1. Explain the effect that pressure changes had on flow rate. How well did the results compare with your prediction?
___
2. How does the plot differ from the plots for tube radius, viscosity, and tube length? How well did the results compare with your