Mixing up of arterial and venous blood does not take place in a heart having
Two chambers
Four chambers
Three chambers
None of the above
The opening of auricles and ventricles on the right side is guarded by
Trilobed valve present between right atrium and ventricle in mammalian heart is
What is called Mitral valve?
Valves are necessary in veins but not in arteries because
What is the function of valves in the heart?