Which of the following factors determines preload?
A)peripheral resistance and tension
B)parasympathetic activity of the ventricles
C)heart rate and venous return
D)the pressure in the aorta and the lungs
E)end- diastolic volume and end- systolic volume

Question

Quizplus · Accepted Answer

Preload is primarily determined by venous return and heart rate, as it refers to the initial stretching of the cardiac myocytes prior to contraction, which is influenced by the volume of blood returning to the heart.

Which of the Following Factors Determines Preload