Nature of valves in the heart is

Nature of valve in the heat is

Explain the significance of valves in the heart.

What heppens if there are no valves in the Heart?

There are valves in the heart between atria and ventricles. Is the purpose of valves in the veins and arteries same?

Valves in heart

Total number of valves in human heart are

Total number of valves in human heart are