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How does blood travel through the heart?

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As the heart beats, it pumps blood through a system of blood vessels, called the circulatory system. The vessels are elastic, muscular tubes that carry blood to every part of the body.

Blood is essential. In addition to carrying fresh oxygen from the lungs and nutrients to your body's tissues, it also takes the body's waste products, including carbon dioxide, away from the tissues. This is necessary to sustain life and promote the health of all the body's tissues.

From: How Your Heart Works WebMD Medical Reference

SOURCE: National Heart Blood Lung Institute, National Institutes of Health.

Reviewed by James Beckerman on November 08, 2017

SOURCE: National Heart Blood Lung Institute, National Institutes of Health.

Reviewed by James Beckerman on November 08, 2017

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