What are the names of the 4 valves in the heart?

1. right atrium 2. right ventricle 3. left atrium 4. left ventricle These listed above are the four chambers of the heart. In between each chamber and the ventricles and large vessels leaving the heart, there are valves that allow the flow of blood in one direction but upon closing do not allow back flow (if they are working correctly). Between the right atrium leading into the right ventricle is an atrioventricular valve called the Tricuspidvalve. It is named for the three flaps from which it is made. Between the right ventricle and the pulmonary veins is a semilunar valve called the Pulmonary valve. Coming in between the left atrium and the left ventricle is an atrioventricular valve known as the Mitral valve (the shape is similar to the mitres worn by bishops) then in between the left ventricle and the aorta is a semilunar valve called the Aortic valve.

SIMPLE ANSWER: The four valves of the heart can be grouped into two pairs. There is the Mitral Valve and Tricuspid Valve which control the blood flow from the atria to the ventricles, and there is the Aortic Valve and the Pulmonary Valve which control blood flow out of the ventricles.