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The Heart
Beginning of Essay
Introduction
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 a .... Middle of Essay
.... 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.
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 pericardiu ....
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Words: 1535 - Pages: 6
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