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The Four Heart Valves

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The Four Heart Valves
One of the four heart valves is the tricuspid valve. This is located between the right ventricle and right atrium. The function of this valve is to prevent backflow of blood in the right atrium. The other valve that is located in the right ventricle is the pulmonary valve. The two valves located on the left side of the heart are the mitral and aortic valve. What prevents the valves from opening backwards is the pressure on each side of the heart. As the heart muscle contracts and relaxes, the valve opens up letting blood flow through the heart.
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