The internal jugular vein has a much lower blood pressure as it is the last place the blood travels to prior to going back to the heart from the head.The common carotid artery divides into two branches which supply oxygenated blood to the head (face, brain, and everything in between) from the aorta.The internal jugular vein takes the deoxygenated blood from the head back to the heart via the brachiocephalic vein and then the Superior Vena Cava.he internal jugular vein has a much lower blood pressure as it is the last place the blood travels to prior to going back to the heart from the head.