Mr. Enlow claims: Abraham Lincoln was probably about six years older than his faked birth date of Feb. 12, 1809, and no more resembled Thomas Lincoln than his true half-brother, Wesley Enloe, who shares the same ultra-lanky frame inherited from their father (see a photo comparison).
Heart valve disorders can arise from two main types of malfunctions: Regurgitation (or leakage of the valve). The valve(s) does not close completely, causing the blood to flow backward through the valve. The heart is forced to pump more blood on the next beat, making it work harder. Stenosis (or narrowing of the valve). The valve(s) opening becomes narrowed, limiting the flow of blood out of the ventricles or atria.
The heart has four valves that separate each chamber so that, under normal conditions, blood cannot flow backwards. These valves can sometimes be replaced if they become damaged. The heartâs valves are: Tricuspid (right AV) valve: This valve opens to allow blood to flow from the right atrium to the right ventricle.