What is the main function of arteries in the circulatory system?

The main function of arteries in the circulatory system is to carry oxygenated blood to body tissues. Arteries have thick, elastic walls that allow them to withstand and regulate the high pressure at which blood is pumped from the heart. This oxygen-rich blood is essential for providing energy and supporting the metabolic activities of tissues and organs throughout the body.

Oxygenated blood transported by arteries originates from the lungs, where it picks up oxygen during respiration. Once the blood is oxygenated, the heart pumps it through the arteries, delivering it to various body parts. This process is vital for maintaining cellular function and overall health.

The other options relate to different aspects of the circulatory and waste management systems. Returning deoxygenated blood is the primary role of veins, which transport blood back to the heart. Nutrient transport typically occurs within blood facilitated through both arteries and veins but is not the sole function of arteries. Blood filtration involves the kidneys and is not a function of arteries, as they are mainly responsible for the distribution of oxygenated blood rather than waste removal or filtration.