The Human Heart
Beginning of paper
is a specialized, four chambered muscle that
maintains blood flow in the circulatory system. The heart is located in the
thorax, it lies left of the body's midline, above and in contact with the
diaphragm. It is behind the breastbone, or sternum, and between the lungs,
with its apex tilted to the ....
Middle of paper
.... If the circulation to the brain is stopped, death ensues
shortly. Since heart attacks are the number-one cause of death in the
United States, the heart gets a great deal of attention.
The heart's wall has three parts, Muscle tissue, or myocardium, is
the middle layer. The inner layer, or endocardium, that lines the inside of
the heart muscle consists of a thin layer of endothelial tissue overlying a
thin layer of vascularized connective tissue. The outside of the heart, the
epicardium, is in ....
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Word count: 526
Page count: 2 (approximately 250 words per page)
