Final answer:
In the systemic circuit, oxygenated blood is pumped from the left ventricle to various organs and tissues through systemic arteries. After delivering oxygen and nutrients and picking up waste products, deoxygenated blood returns to the heart through systemic veins. It is then pumped to the lungs for oxygenation in the pulmonary circuit.
Step-by-step explanation:
In the systemic circuit, oxygenated blood is pumped out of the left ventricle of the heart and enters the aorta. From the aorta, it is transported to various organs and tissues of the body through systemic arteries. In the capillaries, oxygen and nutrients are delivered to the cells, and carbon dioxide and waste products are picked up.
After circulating through the tissues, the deoxygenated blood and waste products are collected by tiny veins, which merge to form larger veins. Eventually, the blood flows into the superior vena cava and inferior vena cava, which return the blood back to the right atrium of the heart. From there, the blood is pumped into the right ventricle and sent to the lungs for oxygenation in the pulmonary circuit.