shortnote on human heart
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The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system
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An adult heart beats about 60 to 80 times per minute. Newborns' hearts beat faster than adult hearts, about 70 to 190 beats per minute. The heart pumps about 6 quarts (5.7 liters) of blood throughout the body. The heart is located in the center of the chest, usually pointing slightly left.
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