Cardiac Cycle

Question 1

What is atrial systole?

Answer 1

This is the phase when both atria contract to force blood into the ventricles through the bicuspid and tricuspid valves

Question 2

What is ventricular systole?

Answer 2

This is the phase when both ventricles contract to eject blood into the pulmonary artery and aorta

Question 3

What is diastole?

Answer 3

This is the relaxation phase of the cardiac cycle, there is no contraction which takes place here. Blood enters the atria from the vena cava and the pulmonary vein