internal struture of Human heart
Answers
Explanation:
The heart also has a wall that is composed of three layers: the outer layer epicardium (thin layer), the middle layer myocardium (thick layer), and the innermost layer endocardium (thin layer). The myocardium is think because it is made up of cardiac muscle fibers.
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A muscular tissue, the cardiac septum, divides the heart into a right and left side. Each side of the heart has an upper chamber or atrium, and a larger, lower chamber, or ventricle. The two sides of the heart have different functions, but they work together to shuttle the blood to all parts of the body.
The heart is a muscular organ roughly the size of a closed fist. It sits in the chest, slightly to the left of center. As the heart contracts, it pumps blood around the body. It carries deoxygenated blood to the lungs where it loads up with oxygen and unloads carbon dioxide, a waste product of metabolism
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