What are the vessels called that circulate blood throughout the body?

The term "blood vessels" refers to the entire network of conduits that transport blood throughout the body. This category encompasses three main types of vessels: arteries, veins, and capillaries. Each type of blood vessel has a specific function in the circulatory system. For instance, arteries carry blood away from the heart, veins bring blood back to the heart, and capillaries facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste products at the tissue level. By using the broader term "blood vessels," it captures the complete system involved in circulation, while the other options specify particular types of vessels within that system.