The left side of the heart is called the _______ circulatory system and its job is to _______

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The left heart drives systemic circulation, delivering oxygenated blood to the entire body. Oxygen-rich blood returns from the lungs through the pulmonary veins into the left atrium, moves into the left ventricle, and is pumped out through the aorta to reach tissues. The left ventricle has a thick muscular wall to generate the higher pressure needed to overcome systemic resistance. In contrast, the right heart handles pulmonary circulation, sending deoxygenated blood to the lungs for gas exchange. So, the left side is the systemic circulatory system, and its job is to pump blood to the body.