Vital vessels are essential for the functioning of the human body. Aortae, ARTERIES and Aortas are all vital vessels that are responsible for transporting oxygenated blood from the heart to the rest of the body. Aortae are the two main ARTERIES that branch off from the aorta, the largest artery in the body. ARTERIES are the blood vessels that carry oxygenated blood away from the heart to the rest of the body. Aortas are the largest artery in the body, which carries oxygenated blood from the heart to the rest of the body.