What is the Function of the Heart Valves

Question

What is the function of the heart valves?
A)To push blood
B)To prevent the backflow of blood
C)To stimulate the heart
D)To give support to the heart

Accepted Answer

The function of the heart valves is to prevent the backflow of blood. They ensure that the blood flows in only one direction through the heart. When the heart contracts, the valves open to allow blood to flow and then close to prevent backflow when the heart relaxes.