What components make up the cardiovascular system?

The cardiovascular system consists of the heart, arteries, and veins, which work together to circulate blood throughout the body. The heart acts as the central pump, responsible for pushing blood into the arteries, which carry oxygenated blood away from the heart to various tissues and organs. The veins then return deoxygenated blood back to the heart, completing the circulation loop.

In this system, arteries are vital as they possess thick, elastic walls designed to withstand the pressure from the heart during contraction. Veins, on the other hand, have thinner walls and contain valves that prevent backflow, ensuring that blood flows in one direction toward the heart. Together with the heart, these components enable the transport of nutrients, oxygen, carbon dioxide, and waste products, maintaining homeostasis in the body and supporting overall health.

While other options may mention parts of different systems or incorrect combinations, they do not accurately represent the primary components of the cardiovascular system, which is specifically focused on the heart and the network of blood vessels (arteries and veins) that facilitate blood circulation.