What is the main function of the aorta?

The aorta's primary function is to carry oxygenated blood away from the heart to the rest of the body. As the largest artery in the human body, it plays a crucial role in the circulatory system by receiving blood directly from the left ventricle of the heart. Once filled with oxygen-rich blood, the aorta distributes this blood through a network of branches that leads to various organs and tissues, ensuring they receive the essential oxygen and nutrients needed for proper function.

The other options represent functions that do not align with the role of the aorta. For example, deoxygenated blood is typically carried by veins back towards the heart, while filtering blood is primarily the job of the kidneys. Blood is stored in different structures, such as the spleen or blood vessels, but this is not a function of the aorta, which is focused on distribution rather than storage.