Medically reviewed by Rafle Fernandez, MD Valvular heart disease, sometimes called heart valve disease, is when one or more ...

Sound familiar? If you listen to your heart beat, you'll hear two sounds. These "lub" and "DUB" sounds are made by the heart valves as they open and close. See the valves in action.

Artery Vein Capillary Function Carry blood away ... flowing at high pressure as it leaves the heart; the largest artery is the aorta Contain valves to prevent back flow of blood Walls are made ...