Essay on Heart Disease

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Heart Disease      You need your heart for all your body needs. It pumps about 2000 gallons of blood a day. It takes about 20 seconds for blood to reach every cell in the body. An artery carries blood out from the heart. A vein carries blood back to the heart. An average adult heart weighs about 10-13 ounces (300 to 350 grams). The rate which the heart pumps varies depending on what your doing. When at rest the heart pumps more slowly. When you run the heart rate increases to provide muscles and other tissues with additional oxygen they need. The typical heart rate is 72 beats per minute. Each beat gives out 2-3 ounces of blood pumped into the arterial system. At this heart…show more content…
The right ventricle has a thicker and stronger muscular wall than the right atrium. The right ventricle pumps the oxygen-poor blood through the pulmonic valve into the lungs where blood gives up carbon dioxide it has carried from tissues. At the same time blood absorbs oxygen. From the lungs pumping action moves blood to a receiving chamber on the other side of the heart. The left atrium, gently pumps the blood to the left ventricle through the mitral valve.      The left ventricle gives a powerful pumping action to send the oxygen enriched in blood into the aorta. The aorta is the principal artery which subdivides and delivers the blood to the body's tissues including brain, organs, and extremities.      Systole is the contraction of the ventricles of the heart which forces blood out. Diastole is the relaxation of ventricles to allow blood to enter. Benavidez 4      Angioplasty is a technique used to clear arteries that have become blocked with fatty deposits. Angiography is used to x-ray the blood vessels.      In the heart there are two valves that prevent backflow of blood from the ventricles into the atria. On the right side of the heart is the tricuspid valve, composed of three flaps of
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