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The cardiovascular system is responsible for transporting essential elements like gases and nutrients throughout the body, consisting of the heart and blood vessels. The heart, a muscular organ located between the lungs, has four chambers and is protected by a pericardium, while its pumping action is facilitated by the myocardium and regulated by a conduction system. Heart valves ensure one-way blood flow and prevent backflow, with characteristic sounds produced during the cardiac cycle of contraction and r

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ns0589403

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EN