The Human Heart :: essays research papers

Abstract:Dorland's Illustrated Medical Dictionary characterizes the heart as "the viscus of cardiovascular muscle that keeps up the flow of the blood". It is partitioned into four depressions; two atria and two ventricles. The left chamber gets oxygenated blood from the lungs. From that point the blood goes to one side ventricle, which constrains it by means of the aorta, through the corridors to gracefully the tissues of the body. The correct chamber gets the blood after it has gone through the tissues and has surrendered a lot of its oxygen. The blood at that point goes through the correct ventricle into the lungs where it gets oxygenated. There are four significant valves in the heart; the left atrioventricular valve (otherwise called the mitral or bicuspid valve), the privilege atrioventricular valve (tricuspid), aortic valve, and the pneumonic valve. The heart tissue itself is fed by the blood in the coronary arteries.2Position of the Heart Within the Body:The heart is set sideways in the chest. The two atria are coordinated upwards and in reverse to one side and are at the degree of the fifth through the eight dorsal vertebrae. The peak of the heart focuses downwards and advances to one side and relates to the interspace between the fifth and 6th ribs, two creeps beneath the left areola. Its atrial fringe compares to a line drawn over the sternum on a level with the upper outskirt of the third costal ligament. Its lower fringe (peak) relates to a line drawn over the lower end of a similar bone, close the xiphoid procedure. Its upper surface is adjusted and raised, coordinated upwards and advances, and framed chiefly by the correct ventricle and part of the left ventricle. The back surface of the heart is straightened and settles upon the stomach muscle. Of its two fringes, the privilege is the longest and most slender, the left is shorter yet thicker and round.Size:In a grown-up, the heart measures around five creeps long, three and a half crawls in the broadest piece of its transverse breadth, and over two creeps in its antero-back. The normal load in the male differs from ten to twelve ounces. In the female, the normal weight is eight to ten ounces. The heart will keep on developing in size up to a propelled time of life. This development is more evident in men than in women.3Circulation of Blood in an Adult:The heart is partitioned by a longitudinal strong septum into two parallel parts which are named both ways as indicated by their position.