Is this true or false....?!
Question: that blood is blue..and not red...?
Answers: that blood is blue..and not red...?
Human blood is red, ranging from bright red when oxygenated to dark red when not. It owes its colour to hemoglobin, a metalloprotein compound containing iron in the form of heme, to which oxygen binds. There exists a popular misconception that deoxygenated blood is blue and that blood only becomes red when it comes into contact with oxygen. Blood is never blue, but veins appear blue because light is diffused by skin. Moreover, the blood inside is dark red and exhibits poor light reflection. From a physiological perspective, veins and arteries appear similar when skin is removed and are seen directly
Basically the skin defuses the light making your veins appear blue. You can see this when you give blood, that blood in the needle has not beem in contact with eanough oxygen to instantly change it to blue.
The only animal I know of that truly has blue blood is the Horseshue crab. Don't believe me look it up.
its blue be4 it combines with oxygen :)
yes it is true. But as soon as it touches air it turns red. So under your skin its blue.
true,
but once it hits air it turns red......
at least that's what my science teacher said.....
;)
edit- damn the dude above me beat me!!!!!!!!!!!!!!!
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Yes it is true
Your blood looks deep purple/blue when the hemoglobin in it is deoxygenized. When hemoglobin is carrying lots of oxygen (each molecule can carry up to 4 Oxygens) it looks red. So if you looked at the blood in your veins it looks deep purple, if you look at it in your arteries it looks red. . This is why when the doctor takes blood it looks deep purple, kinda maroonish. look at the veins by your wrists? What color are they?! It looks blue because of the way light is absorbed by your skin. This is most likely the reason why people think their blood is blue inside..
actually, the blood is always red, just different shades. this is cause due to hemoglobin in the blood(hemoglobin is a protein high in iron that "rusts" in contact with oxygen giving blood it's red hue) and because it is impossible to have 0% oxygen in the blood, it will always remain red, just different shades of it.