How are materials moved by the circulatory system?

The circulatory system transports materials through a network of blood vessels, using the heart as a pump to move blood throughout the body. Oxygen and nutrients are delivered to tissues and organs via arteries, while veins return deoxygenated blood and waste products to the heart. Additionally, the circulatory system helps regulate body temperature and pH levels, facilitating the distribution of hormones and immune cells. This efficient transportation system ensures that essential materials reach their destinations in a timely manner.