Question

Most of the increase in left ventricular volume takes place during what phase of the cardiac cycle? - atrial contraction - isovolumetric relaxation

Answer 1

Atrial contraction

Step-by-step explanation:

During ventricular filling the AV valves remain open, which allows blood to flow from the atria into the ventricles.

ventricular filling. During ventricular filling the AV valves remain open, which allows blood to flow from the atria into the ventricles. The passive flow of blood during this phase (before atrial contraction) accounts for roughly 80 percent of the increase in ventricular volume.