Cardiac Cycle NOT FINISHED

Question 1

What is the main cardiac cycle equation?

Answer 1

ABP = SV x HR x TPR

Question 2

How long does the cardiac cycle last?
How much of this is diastole/systole?
Are these variable?

Answer 2

Cardiac cycle = 850ms
Diastole = 600ms –> can change with exercise
Systole = 250ms –> length doesn’t change

Question 3

What are the 5 stages of the cardiac cycle?

Answer 3

1. pressure will increase in a chamber when muscle around it contracts
2. Valves will open when there is a pressure/energy gradient across them.
3. Blood will flow down a pressure/energy gradient
4. When valves are open, pressures in neighbouring chambers change together
5. When valves are close, pressures in neighbouring chambers can be different