The mitral valve has 2 flaps & is also called this valve, just like a certain tooth
[DOC] [TLE] Understanding Heart Valve Disease - CardioSmart [PAR] Your heart has four valves and problems can arise when one or more of the 
valves ... Two main problems can occur when heart valves are diseased or 
damaged: ... it is often due to prolapsewhen the soft flaps of the mitral valve fail 
to close ... of early-onset heart disease; certain autoimmune disorders including 
lupus,... [DOC] [TLE] Mitral Valve Regurgitation: Treating a Leaky Valve [PAR] Sep 10, 2014 ...