ZoologyDuring the cardiac cycle, the major part of ventricular filling occurs during

During the cardiac cycle, the major part of ventricular filling occurs during

A
joint diastole
B
atrial systole
C
ventricular systole
D
isovolumetric relaxation

Solution:

Ventricular filling occurs during joint diastole (70%) and atrial systole (30%). Ventricular ejection, rather than filling, occurs during ventricular systole. During isovolumetric contraction and relaxation phases, neither filling nor ejection occurs.