Final answer:
End-diastolic volume (EDV), also known as preload, is the maximum filling of the ventricle at the end of atrial systole, just prior to ventricular contraction. It is one of the factors affecting stroke volume.
Step-by-step explanation:
One of the factors affecting stroke volume is end-diastolic volume (EDV). EDV represents the maximum filling of the ventricle at the end of atrial systole, just prior to ventricular contraction. EDV is also referred to as preload, which is another way to express the amount of blood in the ventricles. The greater the EDV, the greater the preload, and these factors contribute to stroke volume.