The Heart Its Diseases and Functions

The Heart Its Diseases and Functions - Introduction You...

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Introduction I 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 rate it beats about 104,000 times a day. The Superior and Inferior are the biggest veins in the body. The Superior is really the biggest. These veins have a lot of carbon dioxide and have oxygen-poor blood. The aorta is the biggest artery in the whole body. Which will be covered in the report. The pulmonary vein takes the blood out of the heart and takes it to the lungs. Today we will talk about many different parts of the heart: The Three Layers of Muscle, Atriums, Ventricles, Systole and Diastole, Treatments for the Heart, Valves, and many Diseases. T The Three Layers of Muscle The heart has three layers of a muscular wall. A thin layer of tissue, the pericardium covers the outside, and another layer, the endocardium, lines the inside. The myocardium is the middle layer and is the biggest of all. Myocardial Infarction is a disease later read about in this report. The pericardium is a fibrous sac which is very smooth lining. In the space space between the pericardium and epicardium is a small amount of fluid. This fluid makes the movement of the heart muscles smooth. Myocardium is the heart muscle itself. m Atriums The right atrium is a low pressure pump that moves blood into the right ventricle through the tricuspid valve. The atria are the two upper chambers of the heart. The right atrium receives blood from the veins which is low in oxygen and high in carbon dioxide; this blood is then transferred to the right lower chamber, or right ventricle, and is pumped into the lungs. i Ventricles The ventricle is a muscular chamber that pumps blood out of the heart and into the circulatory system. Right Ventricle
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This note was uploaded on 05/21/2011 for the course ACCT 101 taught by Professor All during the Spring '11 term at Kaplan University.

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The Heart Its Diseases and Functions - Introduction You...

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