is your blood blue before it hits oxygen?
154046
I've heard it's sort of a maroon color.
117755
Actually blood would be red, the bluish appearence on Earth is a bit of an illusion with the nature of the veins (i forget the details).\n\nSo, the blood would be red, I would think.
699839
carries oxygen around the body
908467
Almost all vertebrates use the iron compound hemoglobin as the oxygen-transporting compound in their blood. Oxygenated hemoglobin is bright red, unoxygenated darker red. Many invertebrates use a copper compound rather than an iron compound to transport oxygen, so their blood is blue-green. I believe there is some arctic fish which also has blue-green blood, for the same reason.
942407
normally blue because the oxygen diffuses blue light most.
956240
For the patch of skin that was blue, sounds like poor circulation. That part was not getting circulated with blood and when you stood up and massaged it blood was getting back to that area.
1067197
Blood is *never* blue.  Blood is described as dark red (venous) or bright red (arterial).  Our veins look blue because we are looking at them *through* our skin.  The blood inside them is dark red and it doesn't reflect light very well. The blood you see when you get hurt is usually venous blood. oxygen-poor blood is blue, oxygen enriched blood is red.\n\nIn humans and other hemoglobin-using creatures, oxygenated blood is a bright red in its color. Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in color. This has led to a common misconception that before venous blood is exposed to air it is blue.
1104888
In humans and other hemoglobin-using creatures, oxygenated blood is a bright red in its color. This is due to oxygenated iron in the red blood cells. Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in color. This has led to a common misconception that before venous blood is exposed to air it is blue.\n\nread more at\nhttp://en.wikipedia.org/wiki/Blood\n\n-unpredicktaboh-
570523
Unoxygenated Blood goes from the heart to the lungs and becomes oxygenated.  It then goes back to the heart before being pumped out through the arteries and arterioles to all the parts of the body.  At this point nutrients and oxygen mix with the cells of the body and exchange oxygen for carbon dioxide.  It then goes back to the heart to begin the process over again.
587615
oxygenated blood is red. deoxygenate blood is blue, you always bleed red because blood pulls the oxygen out of the air the same way  it would in your lungs, and yes it happens to everyone
219455
because blood is blue.\n\nit only turns red when it oxidates/coagulates with oxygen.
799464
Blood does not need oxygen to be red.  Blood is never blue.  Just because a hose is green, it doesn't mean the water coming out will be green as well. (referring to veins)
484554
Oxygenated blood is bright red (the color when you get a cut and bleed), unoxygenated blood is brick red-the color of the blood in the tube when you get blood drawn.  Veins and arteries are *not* blue- there isnt anything colored blue in the circulatory system.  The reason the veins look blue is because of the effect skin has on preferentially letting certain colors through (blue) and blocking others (yellow and red).  So when you look at your veins, you are looking through a colored filter-the skin.\nWith carbon monoxide, blood becomes almost neon-red.
335943
Okay.... blood, in general, no matter what species it comes from is blue when it is oxygen deficient (in our veins)... and red when it has oxygen (in our arteries)... if a snake is cut open (while alive.... or right after being killed) then all of the blood will be red, regardless if you hit a vein or artery..... because when the blood is given oxygen it turns red.\n\n-Z
974165
When you suffer from a lack of oxygen, the color of blood seems darker. It is also the case for venous blood which seems dark. In contrast oxy hemoglobin seems more bright as is arterial blood rich in oxygen.
579619
Oxygen bind to hemoglobin which is part of the red blood cells.  It is picked up in the lungs where there are little sacs that have a very thin lining of cells.  Therefore the air you breathe in will be able to reach the blood.  Then the hemoglobin will carry blood to the parts of the body.
371542
before working out, b/c after ur body feels heavy b/c of all the blood circulating