Question

"passive refilling of the heart occurs during which phase of the cardiac cycle?"

Answer 1

hey! here is your answer

passive refilling of the heart occurs During ventricular systole, the blood pressure 

Answer 2

It occurs during the first phase via venous return where blood returns from depleted organs and fills the atrium until the pressure causes the AV valves to open and passively fill 80% of the ventricle.