PhysioEx 9.0 HELP

I need some help with my physioEx 9.0 exercise 5 please

Activity 5

1.  Explain the effect of incresing the right flow tube radius on the flow rate, resistance, and pump rate?

2.  Describe what the left and right beakers in he experiment correspond to in the human heart?

3.  Briefly describe how the human heart could compensate for flow rate changes to maintain blood pressure?



Activity 6

1.  Describe the Frank Staring law in the heart?

2.  Explain what happened to the pump rate when you increased the stroke volume?  Why do you think this occured? 

3.  Describe how the alters stroke volume?

4.  Describe the intrinsic factors that control stroke volume?


Activity 7

1.  Explain how the heart could compensate for changes in peripheral resistance?

2.  Which mechanism had the greatest compensatory effect?

3.  Explain what happened when the pump pressure and the beaker pressure were the same?

4.  Explain whether it would be better to adjust heart rate or blood vessel diameter to achieve blood flow changes at a local lever (for example, in just the digestive system)?