AP BIOLOGY

Detailed explanation-1: -Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.

Detailed explanation-2: -Two pathways come from the heart: The pulmonary circulation is a short loop from the heart to the lungs and back again. The systemic circulation carries blood from the heart to all the other parts of the body and back again.

Detailed explanation-3: -Systemic circulation moves blood between the heart and the rest of the body. It sends oxygenated blood out to cells and returns deoxygenated blood to the heart.

Detailed explanation-4: -After oxygenation, the oxygenated blood returns to the left atrium of the heart through the pulmonary vein. The movement of blood between the heart and lungs is called the pulmonary circulation.