Valves

Why are there valves between the different chambers of the heart?
The valves prevent the backward flow of blood. These valves are actual flaps that are located on each end of the two ventricles (lower chambers of the...
Why are the openings of auricles and ventricles are guarded by valves?
The auricles and ventricles are guarded by valves because these valves control the flow of blood and also see that the blood does not flow back. They ...