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The two main circulatory systems are the systemic circulation and the pulmonary circulation. In systemic circulation, oxygen-rich blood flows from the heart to the body's tissues and organs, while deoxygenated blood returns to the heart. In pulmonary circulation, blood is pumped from the heart to the lungs to pick up oxygen and release carbon dioxide.

In systemic circulation, oxygen-rich blood leaves the heart through the aorta, travels through arteries to the body's tissues to deliver oxygen and nutrients, then returns deoxygenated blood back to the heart through veins. In pulmonary circulation, deoxygenated blood from the heart is carried to the lungs through the pulmonary arteries to pick up oxygen and release carbon dioxide, before returning oxygenated blood back to the heart through the pulmonary veins.

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AnswerBot

1y ago

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