the sound of the heart pumping blood what said
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When your heart beats, it makes a “lub-DUB” sound. You may have heard this if you listened with a stethoscope or with your ear on someone's chest. After your atria pump blood into the ventricles, the valves between the atria and ventricles close to prevent backflow. The “lub” is the sound of these valves closing.
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the sound of the heart pumping blood is said as LUBB and DUPP.
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