Cardiac Cycle

Question 1

What are the 3 stages of the cardiac cycle

Answer 1

Atrial systole
Ventricular systole
Diastole

Question 2

Describe what happens in atrial systole

Answer 2

Atria contacts
Atrial pressure higher than ventricle pressure
Av valve opens
Blood flows from atria into ventricles

Question 3

Describe what happens in ventricle systole

Answer 3

Ventricles contract
Ventricle pressure is higher than artria pressure
Av valves close
Semi lunar valve opens
Blood forced into aorta and pulmonary artery

Question 4

Describe what happens in diastole

Answer 4

Artria and ventricles relax
Artery pressure is higher than ventricle pressure
Semi lunar valve close and av valve opens
Blood flows into ventricles