Biology, asked by Meghanabeema, 9 months ago

explain the mechanism of heart

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Answered by sunit9949

Answer:

The contraction of the heart muscle starts in the two atria, which push the blood into the ventricles. Then the walls of the ventricles squeeze together and force the blood out into the arteries: the aorta to the body and the pulmonary artery to the lungs

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