Interesting Facts About Oxygen (O)
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Oct 3, 2008 5:00am
Looks like you are right Doug. I did some checking around and it seems it only appears blue through your skin because of how the light is absorbed and reflected by your skin and blood. Looks like my biology teacher is a big fat liar.
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Sorry, but number 8 simply is not true. As a former EMT I've seen many shades of blood and they are all red.
It is true that oxygenated blood (in your arteries) is bright red. However, the blood in your veins that is oxygen poor/carbon-dioxide rich is not blue. You could call it dark red, crimson or burgundy...but no one would call it blue.