Explain the function of valves
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The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is avalve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood.
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The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is avalve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood.
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