Pulmonary = the arteries carries de-oxygenated blood to the lungs and the veins carry oxygenated blood to the heart for
systemic = the arteries carries oxygenated blood to the whole body and the veins carry de-oxygenated blood to the heart.
The aorta is the main artery in the human body
The aorta distributes oxygenated blood to all parts of the body through the systemic circulation