What is the function of the circulatory system?

The circulatory system transports blood, nutrients, gases (like oxygen and carbon dioxide), hormones, and waste products throughout the body. The heart pumps blood through a network of arteries, veins, and capillaries, ensuring that oxygenated blood reaches tissues while deoxygenated blood is returned to the lungs for reoxygenation. The circulatory system plays a crucial role in maintaining homeostasis, regulating temperature, and supporting immune function. The system consists of the heart, blood vessels, and blood.