What is the primary function of arteries?

The primary function of arteries is to carry blood away from the heart. This is a crucial role in the circulatory system, as arteries are responsible for transporting oxygen-rich blood from the heart to various tissues and organs throughout the body. The walls of arteries are thick and elastic, which allows them to withstand and accommodate the high pressure created when the heart pumps blood. This structural adaptation not only helps maintain blood flow but also supports the efficient delivery of oxygen and nutrients to cells.

The other functions listed in the options do not primarily fall under the role of arteries. While filtering impurities from the blood is a function associated with the kidneys and other organs, controlling blood temperature is related to the larger circulatory system involving various blood vessels and mechanisms. Additionally, while hormones are transported throughout the body, this is primarily the function of the bloodstream, including veins and the circulatory route, rather than a specific role of arteries.