No its not. On diagrams of the cardiovascular system they show it up as blue so u can distinguish de-oxidized blood from oxygenated blood. The "blue blood" is in your veins. It is rather a more dark/deep red.
Ha ha. No - blood is never blue, but it does come back from the body a purple color. After the heart has pumped your spent blood through your lungs, it comes back bright red to be recirculated. The color is oxyhemoglobin and that is what gives a healthy pink glow to your body. The only people I have seen with genuinely blue blood were dead.
1 year ago
Last edited at 9:43PM on 11/21/2012
The blood from your heart in your arteries is red because it is oxygenated to be circulated through your body and deliver oxygen to the tissues via the cardiovascular system. After the oxygen has been extracted from the blood and used by the tissues, the deoxygenated blood in your veins is "blue" as it returns to the heart for reoxygenization (through your pulmonary circuit when you breathe), and ultimately recirculation, where it becomes red again.
blood in veins without oxygen is a dark purple it then travels to the heart gets pumped through the lungs gets oxygen turns bright red back into the heart and shot out through the arteries as red blood until it drops off the oxygen to the cell tissue then its purple again