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A healthy heart contracts 70-80 times in a minute and approximately 100.000 times in a day. In this way, 300 lt. of blood is pumped to the whole body in an hour. In a normal heart, there are 4 cavities. 2 upper cavities are called right and left atriums, lower cavities on the other hand are called left and right ventricles. Heart’s duty is to transfer oxygenic blood to whole body.
Valves situate between cardiac chambers or between cardiac chambers and main veins and they regulate blood flow according to heart’s pumping characteristic. There are 4 valves in the heart. Aortic and mitral valves are on the left side and they pump oxygenic arterial blood to the body and tricuspid and pulmonary valves are on the right side of the heart and they pump venous blood to lungs.
Aorta is the biggest vein in human body. It transfers arterial blood from the heart to all organs which makes it “main blood line”. Considering height and weight of the person, it carries 3 to 6-7 lt. of blood in a minute. There is a certain pressure (80 - 140 mmHg) while transferring the blood depending on heart’s beat rate and structure. We call it tension. Aorta may enlarge silently in the body due to various reasons. It should be diagnosed early.