You have 2 different blood vessels inside your body that circulate the blood.
#1 is the arteries,the vessels that have a "pulse" these vessels carry oxygenated blood throughout your body,under pressure,that's what is called the "blood pressure".That blood is bright "cardinal" red,from the oxygen percent.
#2 are the veins,they carry blood back to the heart and lungs so the blood can exchange carbon dioxide for oxygen,we breath this by- product out of our body when we exhale the air in our lungs.
These vessels carry the darker blood is a dark "reddish purple" color,because the oxygen depletion,the "veins" also do not "pulse" because its not under allot of pressure etc.
You don't have "blue" blood,that's a very old term that was used to describe sick babies with heart defects etc.
Apr 8th, 2015
Are you studying on the go? Check out our FREE app and post questions on the fly!