Cardiac Cycle NOT FINISHED Flashcards Preview

3/ CVS > Cardiac Cycle NOT FINISHED > Flashcards

Flashcards in Cardiac Cycle NOT FINISHED Deck (3)
Loading flashcards...
1
Q

What is the main cardiac cycle equation?

A

ABP = SV x HR x TPR

2
Q

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

A

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

3
Q

What are the 5 stages of the cardiac cycle?

A
  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