Why? Tell Me Why!: Blood
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Oops, forgot that youtube blocks links.
scienceblogs (dot) com/scientificactivist/2008/04
/why_are_veins_blue.php -
Oh god, no, no not even close. Blood is never blue, only shades of red. Deoxygenated blood is dark red, oxygenated blood is bright red. The reason your veins look blue is because of Rayleigh scattering--look it up. If you were to cut your arm open right now and look at the veins that appeared blue through the skin, you would see that they are actually red.
Here is a very helpful article on the matter.
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ya right...i knew this also
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@diah4 health class
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WOW. That makes alot of sense. amazing. The human body is amazing.
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How you know that?
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the blood in the veins are actually clear it just looks blue
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No, this video has it wrong. Most people think that de-oxygenated blood is blue, but it's *not*. Oxygenated blood is bright red, and de-oxygenated blood is dark red. The Wikipedia article on "Blood" has it right - read the section titled "Color".
Veins appear blue mostly for reasons other than the dark-red color of the blood in them.
ghuegel 1 year ago 6
Today's kids have a television schedule of
Disney Channel, Nick, then Cartoon network. Repeat... 10x, then sleep. Repeat again.
This is going from common knowledge.... to uncommon knowledge
ummhea 2 years ago 3