21. The heart has four valves and the other two are the mitral and the tricuspid valves. 22. Mitral and tricuspid defects are opposite. 23. In 1960, he performed one of the first-ever repairs of tricuspid valve regurgitation. 24. In dogs, tricuspid valve dysplasia can be similar to Ebstein's anomaly in humans. 25. The most common CHD include tricuspid valve regurgitation, atrial septal defects and patent ductus arteriousus. 26. When the ventricular pressure is greater than the atrial pressure the tricuspid and mitral valves will shut. 27. The tricuspid valve has three leaflets or cusps and is on the right side of the heart. 28. The atrioventricular rings serve for the attachment of the muscular fibers of the bicuspid and tricuspid valves. 29. The teeth are tricuspid and pleurodont, meaning they are attached to inner surfaces of the jaws. 30. The closing of the mitral valve and the tricuspid valve constitutes the first heart sound ( S1 ).
