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The tricuspid valve is one of the four valves in the human heart. It is located between the right atrium and the right ventricle. This valve has three flaps, or cusps, made of endocardium (the membrane lining the heart) reinforced with dense connective tissue. The tricuspid valve's primary function is to prevent the backflow of blood from the right ventricle into the right atrium, ensuring that blood flows in only one direction through the heart. When the ventricles contract, the tricuspid valve closes, preventing blood from returning to the atria.12

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