What is the process in which the blood vessels that supply the heart muscles are narrowed or closed by the gradual buildup of a
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Answer:
The deoxygenated blood enters the heart from the superior and inferior vena cava and pumped into the right atria then pushed down into the right ventricle from there the blood is pumped out through the pulmonary artery (the only place in the body where an artery has deoxygenated blood) to the lungs. The blood gets oxygenated and returns to the heart via the pulmonary vein (the only place in the body where a vein carries oxygenated blood) and pushed into the left atria the pumped into the left ventricle and out to the body via the aorta.
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