Biology - Body Fluids and Circulation Question with Solution | TestHub

The amount of blood brought back to the heart via the veins per unit time is defined as venous return.

Cardiac output is the volume of blood pumped by the heart per minute.

Stroke volume is the volume of blood pumped out by a ventricle with each heartbeat.

Backflow of blood is the reverse flow of blood, which is normally prevented by valves in the veins and the heart.

Answer: venous return