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08-04-2017
Biology

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Summarize how the actions of the heartbeat make their first and second sounds.

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08-04-2017

when the blood is pumped from the right ventricle to the pulmonary artery.. the "lubb" sound is heard... while ..when the oxygenated blood is pumped by the left ventricle to the aorta.. a larger "dubb" sound is heard...

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