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Space within the chest containing the lungs, heart, esophagus, trachea, aorta, venae cavae, and pulmonary vessels
As your heart contracts, it generates pressure that moves your blood through your blood vessels
Your heart essentially has two pumps: one on the right side that sends blood through the pulmonary circulation of your lungs and back to the second pump on your left side, which sends blood through the systemic circulation of your body. Your heart valves make this one-way flow of blood possible.
Regulate blood supply
The changing metabolic needs of your tissues and organs—for example, when you exercise—are met by changes in the rate and force of your heart's contractions.
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