PhysioEx 9.0 Exercise 5 - Activity 5 & 7

I'm really stuck on the following questions. If anyone could help, I would greatly appreciate it.

Activity 5 Questions:

1. Describe the position of the pump during diastole.

2. Describe the position of the pump during systole.

3. Describe what happened to the flow rate when the blood vessel radius was increased.

4. Explain what happened to the resistance and the pump rate to maintain pressure when the radius was increased.

Activity 7 Questions:

1. Explain why a thicker myocardium is seen in both the athlete's heart and the diseased heart.

2. Describe what the term afterload means.

3. Explain which mechanism in the simulation had the greatest compensatory effect.

4. Describe the mechanism used in the human heart to compensate for aortic stenosis.