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How the Heart Works

Intoduction to How The Heart Works

Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and contracts) 100,000 times per day, pumping five or six quarts of blood each minute, or about 2,000 gallons per day.

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Source: MedicineNet.com
http://www.medicinenet.com/heart_how_the_heart_works/article.htm

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