The valve which prevent in the back flow of blood from right atrium is

Blood from right atrium reaches _______

In veins, valves are present to check backward flow of blood flowing at

In veins, valves are present to check backward flow of blood flowing at

The valves which are present in the blood vessels are closed to prevent backward flow of blood into the ventricles we hear the sound of heart as

What prevents back flow of blood inside the heart during contraction?

The valve that is present between right atrium and right ventricle is called…………… The valve that is present between left atrium and right ventricle is called……………….