Question

Define circulatory system role of heart muscle contractions

Answer 1

heart pumps out oxygenated blood obtained from pulmonary vein coming from lungs
aorta travels throughout the body supplying oxygebated blood to organs
vein takes up deoxygenated blood from organs and pours in right atrium
heart pumps blood in a pressure that allows the blood to flow in arteries

Answer 2

Explanation:

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The circulatory system is made up of blood vessels that carry blood away from and towards the heart.