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The Heart
Part 1 of Paper
....ay. 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 hea.... Part 2 of Paper
.... 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. .... |
| Number of words: 1535 - Approximate pages: 6 |
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