Where does pure blood flow, in arteries or veins?

Pure blood is oxygenated blood i.e. blood carrying oxygen. The arteries carry purified blood from the heartto the various parts of the body. The veins carry de-oxygenated blood. But there is an exception, the pulmonary artery and vein. read more

Either way it is pure blood, so the question does not make any sense. Even if you somehow take the opinion that oxygenated blood is somehow more pure than deoxygenated blood, arteries do not carry pure oxygenated blood anyway, there is always some deoxygenated blood present. read more

Veins are blue blood vessels that carry blood towards the heart. Oxygen Concentration: Arteries carry oxygenated blood (with the exception of the pulmonary artery and umbilical artery). Veins carry deoxygenated blood (with the exception of pulmonary veins and umbilical vein). Direction of Blood Flow: From the heart to various parts of the body. read more