Which blood vessel is known for carrying blood away from the heart?

The correct choice is the artery, as arteries are specifically designed to carry oxygenated blood away from the heart to various parts of the body. This is a fundamental function in the circulatory system, ensuring that tissues receive the necessary nutrients and oxygen to function properly. Arteries have thick, muscular walls that can withstand the high pressure generated when the heart pumps blood. This structural adaptation allows them to efficiently transport blood throughout the body.

In contrast, veins are responsible for returning deoxygenated blood back to the heart. Capillaries serve as the sites for the exchange of gases, nutrients, and waste products between the blood and surrounding tissues, effectively connecting arteries and veins. Venules, on the other hand, are small blood vessels that collect blood from capillaries and lead it into veins, playing a supportive role in the circulatory process rather than carrying blood away from the heart.