Heart Valves |
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| Cardiac Valves; Cardiac Valve; Heart Valve; Valve, Cardiac; Valve, Heart; Valves, Cardiac; Valves, Heart | |
| Flaps of tissue that prevent regurgitation of BLOOD from the HEART VENTRICLES to the HEART ATRIA or from the PULMONARY ARTERIES or AORTA to the ventricles. | |