Which circulation is responsible for delivering oxygenated blood to tissues throughout the body?

Systemic circulation is the correct choice because its primary function is to transport oxygenated blood from the heart to the various tissues and organs throughout the body. When the left ventricle pumps blood into the aorta, that oxygen-rich blood travels through a vast network of arteries, arterioles, and eventually capillaries, where oxygen and nutrients are exchanged for carbon dioxide and waste products at the cellular level.

In contrast, pulmonary circulation refers to the path that deoxygenated blood takes from the heart to the lungs for oxygenation and then back to the heart, focusing primarily on gas exchange rather than systemic distribution. Coronary circulation pertains specifically to the blood supply to the heart muscle itself, ensuring that cardiac tissue receives the necessary oxygen and nutrients. Renal circulation involves the flow of blood to and from the kidneys, primarily for the purpose of filtering waste from the blood and regulating blood pressure, rather than supplying oxygen to general body tissues. Thus, systemic circulation is solely dedicated to delivering vital oxygen to sustain cellular functions throughout the body.