Final answer:
The left ventricle pumps oxygen-rich blood into the aorta, the main artery that distributes blood throughout the body. The right atrium initially receives deoxygenated blood from the systemic circuit, and blood flows through arteries, capillaries, venules, veins, and the aorta in a continuous loop.
Step-by-step explanation:
The left ventricle is responsible for pumping oxygen-rich blood into the systemic circuit. The correct destination for the blood being pumped by the left ventricle is the aorta (A). The aorta is the main artery that carries oxygenated blood from the heart to the rest of the body, ensuring that all tissues get the necessary oxygen and nutrients.
As for the initial reception of blood from the systemic circuit, the right atrium (C) is the first chamber to receive deoxygenated blood coming back to the heart from the body. Once the right atrium fills, blood moves to the right ventricle, which, in turn, pumps it into the pulmonary trunk and to the lungs for reoxygenation.
Blood flows through the cardiovascular system in the following order: arteries; capillaries; venules; veins; venules; aorta; arteries. The process of circulation ensures that blood is oxygenated in the lungs, distributed to the body's tissues, and then returned to the heart to repeat the cycle.