Question

Which of the following is most likely to cause a larger EDV (end diastolic volume)?

A. Standing very still
B. An increase in ventricular contractility
C. Increased Ca++ in the ventricular muscle
D. An increase in venous return

Answer 1

An increase in venous return is most likely to cause a larger end diastolic volume (EDV).

Step-by-step explanation:

An increase in venous return is most likely to cause a larger end diastolic volume (EDV). Venous return refers to the amount of blood flowing back to the heart from the veins. When there is an increase in venous return, more blood fills the ventricles during diastole, resulting in a larger EDV.