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User avatar #36 - noodlelover (08/22/2013) [-]
Do you know some people actually think blood is blue....
#61 to #36 - flixoe ONLINE (08/22/2013) [-]
Blood is blue when it is oxygen-depleted. Blood is only red when enriched with oxygen, thus why when you get a cut, it comes out red.
Blood is blue when it is oxygen-depleted. Blood is only red when enriched with oxygen, thus why when you get a cut, it comes out red.
#130 to #61 - lakoonuk (08/22/2013) [-]
Blood in syringes is red.
Blood in syringes is red.
User avatar #66 to #61 - bladebites (08/22/2013) [-]
It's never straight up blue, dude. I don't know where you got that information, but it still looks red, just lest reddish. Like, not bright crimson red, but definitely not blue.
#70 to #66 - flixoe ONLINE (08/22/2013) [-]
There you go. Get your facts straight.
User avatar #74 to #70 - bladebites (08/22/2013) [-]
Yes, it's typically referred to that way. I'm talking about the actual color, it's not literally, visibly blue.
chemistry.about.com/od/biochemistry/a/Is-Deoxygenated-Human-Blood-Blue.htm
en.wikipedia.org/wiki/Venous_blood
www.biology-online.org/biology-forum/about763.html
I could provide more links, but you could do it yourself with some proper googling.
Please don't tell me to get my facts straight if you have no idea what you're talking about.
#79 to #74 - flixoe ONLINE (08/22/2013) [-]
I apologize. I had believed this from my science teachers and read this:

If the vessel is deeper (about 0.5 mm or more), not as much blue or red light will be absorbed. Importantly, this effect will be more pronounced on blue light than on red light since blue light doesn’t penetrate skin very well (the ratio of red light reflected to blue light reflected is about 3:2 or less). This is the case for the “blue veins” observed in skin. Once the vessel is deep enough, though, it won’t be seen at all, as light of all wavelengths will be reflected before it can interact with the blood.

Thanks.
User avatar #82 to #79 - bladebites (08/22/2013) [-]
No problem at all.
The blood is a different color; it's just not blue. It's darker, but not blue.
Some animals have blue blood though, which I think it pretty cool.
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#78 to #74 - flixoe has deleted their comment [-]
User avatar #80 to #78 - bladebites (08/22/2013) [-]
Did you actually even read any of the links? It says it in pretty much all of them.
"While your blood never actually turns blue, your skin can take on a bluish cast as a result of certain diseases and disorders. This blue color is called cyanosis. If the heme in hemoglobin becomes oxidized it may become methaemoglobin, which is brownish. Methaemoglobin can't transport oxygen and its darker color may cause skin to appear blue. In sulfhemoglobinemia, the hemoglobin is only partly oxygenated, making it appear dark red with a bluish cast. Sulfhemoglobinemia is very rare."

The blue veins=blue blood thing is just a common misconception.
#96 to #80 - thehonorwolf (08/22/2013) [-]
Just to drop a fun fact, bladebites is completely right, however some animals do have blue blood. Specifically Horseshoe Crabs and other semi-ancient marine arthropods. The blue color is a result of their blood being copper based, unlike our blood which uses iron.
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