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2. Tricuspid regurgitation - Wikipedia

   en.wikipedia.org/wiki/Tricuspid_regurgitation

   Tricuspid regurgitation. Tricuspid regurgitation ( TR ), also called tricuspid insufficiency, is a type of valvular heart disease in which the tricuspid valve of the heart, located between the right atrium and right ventricle, does not close completely when the right ventricle contracts ( systole ). TR allows the blood to flow backwards from ...

3. Heart valve - Wikipedia

   en.wikipedia.org/wiki/Heart_valve

   A heart valve is a biological one-way valve that allows blood to flow in one direction through the chambers of the heart. Four valves are usually present in a mammalian heart and together they determine the pathway of blood flow through the heart. A heart valve opens or closes according to differential blood pressure on each side. [1] [2] [3]

4. Tricuspid valve - Wikipedia

   en.wikipedia.org/wiki/Tricuspid_valve

   The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, at the superior portion of the right ventricle.The function of the valve is to allow blood to flow from the right atrium to the right ventricle during diastole, and to close to prevent backflow (regurgitation) from the right ventricle into the right atrium during right ventricular ...

5. Valvular heart disease - Wikipedia

   en.wikipedia.org/wiki/Valvular_heart_disease

   See media help. Valvular heart disease is any cardiovascular disease process involving one or more of the four valves of the heart (the aortic and mitral valves on the left side of heart and the pulmonic and tricuspid valves on the right side of heart). These conditions occur largely as a consequence of aging, [ 1] but may also be the result of ...

6. Heart valve dysplasia - Wikipedia

   en.wikipedia.org/wiki/Heart_valve_dysplasia

   Heart valve dysplasia is a congenital heart defect which affects the aortic, pulmonary, mitral, and tricuspid heart valves. Dysplasia of the mitral and tricuspid valves can cause leakage of blood or stenosis. [citation needed] Dysplasia of the mitral and tricuspid valves - also known as the atrioventricular (AV) valves - can appear as thickened ...

7. Coronary circulation - Wikipedia

   en.wikipedia.org/wiki/Coronary_circulation

   Coronary circulation is the circulation of blood in the arteries and veins that supply the heart muscle (myocardium). Coronary arteries supply oxygenated blood to the heart muscle. Cardiac veins then drain away the blood after it has been deoxygenated. Because the rest of the body, and most especially the brain, needs a steady supply of ...