Medically reviewed by Christopher Lee, MD The aorta is the largest blood vessel in the body, carrying oxygen-rich blood from the heart to every organ and tissue. It begins at the left ventricle, ...

Blood vessels leading into and out of the heart There are four main blood vessels that take blood into and out of the heart. The aorta is the largest artery in the body. It carries oxygenated ...

All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...