[ARCHIVED THREAD] - Color of blood (Page 1 of 2)
Posted: 6/25/2009 5:00:49 PM EDT
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If blood is red, then why are your veins blue? |
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Cuz de red blood cells lose their oxygen. Arteries are red because it's oxygenated blood, veins are blue because it's the backflow without the O2. Get the blood out of the vein it'll be red as anything because it grabs oxygen from the environment. 
Horseshoe crabs have blue, copper based blood in their veins. Humans do not have a drop of blue blood in their bodies; either venous or arterial. |
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Cuz de red blood cells lose their oxygen. Arteries are red because it's oxygenated blood, veins are blue because it's the backflow without the O2. Get the blood out of the vein it'll be red as anything because it grabs oxygen from the environment.
Horseshoe crabs have blue, copper based blood in their veins. Humans do not have a drop of blue blood in their bodies; either venous or arterial. what? are you arguing that unoxygenated blood is not blue? |
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Oxygenated blood is bright red.
Unoxygenated blood is dark red. It is not blue. Your elementary school teacher lied to you, and you still believe it. It has to do with the way that light is absorbed by blood, and reflected by skin.These phenomenon working together cause subdermal blood to appear blue because of the way that light interacts with these mediums. Human blood is never blue naturally. Ever. |
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Cuz de red blood cells lose their oxygen. Arteries are red because it's oxygenated blood, veins are blue because it's the backflow without the O2. Get the blood out of the vein it'll be red as anything because it grabs oxygen from the environment.
Horseshoe crabs have blue, copper based blood in their veins. Humans do not have a drop of blue blood in their bodies; either venous or arterial. what? are you arguing that unoxygenated blood is not blue? He's not arguing - he's stating fact. Those human body charts you saw in school as a kid were colored red and blue to illustrate the differences between arteries and veins, not to show the true color of blood. Were arteries close enough to the skin to see, like veins, they would appear blue as well. |
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So, if the blue blood thing is true, everytime you have blood taken, the vials are full of oxygen to make the blood turn red, huh? Is this done just to keep you from knowing the truth? Bunch of retards in this thread. That's a great example. And yes, there is a little bit of stupid in this thread. |
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http://en.wikipedia.org/wiki/Cyanosis From the very link you posted: Although human blood is always a shade of red (except in rare cases of hemoglobin-related disease), the optical properties of skin distort the dark red color of deoxygenated blood to make it appear bluish[1].
What did you do, read the first sentence and say "Eureka! Thar be proof!" |
| My elementary school teachers also taught me the New Deal saved America from destruction, so it doesn't surprise me they lied again. I'm glad I spent most of my formative years compiling lists of who likes who and playing kickball instead of paying more attention to their mis-information. |
| I see my own and 39 other peoples blood running through tubes 15 hours a week. Mine is dark red all the time, I've never seen bright red and this is being pumped from a major artery. I have noticed that the older people (70+) in the dialysis clinic have darker blood to the point that it looks black. |
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If blood is red, then why are your veins blue? When I was in elemtary school, they told us it had something to do with the oxygen. Or something like that. I don't know I wasn't really paying attention. That's right, it turns red when oxy hits it. |
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If blood is red, then why are your veins blue? When I was in elemtary school, they told us it had something to do with the oxygen. Or something like that. I don't know I wasn't really paying attention. That's right, it turns red when oxy hits it. Please... please read the thread. Educate yourself. |
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Quoted: I like to block a vein with my finger, run another finger along it to collapse it, then lift my other finger, allowing it to suddenly fill with blood and pop out. It's one of my favorite hobbies.  I like to do pressure point arterial blocks on an arm. Let the blood drain out of the arm, making it have that look of a dead person. Once the block is removed, I am amazed at the speed of recovery of the color. |
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Artery v. vein FTW. When I was in 3rd grade I tried to catch a pencil that had rolled off my desk by closing my legs together. The left leg caught the eraser and drove the point of the pencil into my right thigh. The blood that came out was blue.  Did Puff the Magic Dragon come swooping down and whisk you off to Gumdrop Land General Hospital?
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Cuz de red blood cells lose their oxygen. Arteries are red because it's oxygenated blood, veins are blue because it's the backflow without the O2. Get the blood out of the vein it'll be red as anything because it grabs oxygen from the environment. because it has electrolytes |
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Quoted: Quoted: Cuz de red blood cells lose their oxygen. Arteries are red because it's oxygenated blood, veins are blue because it's the backflow without the O2. Get the blood out of the vein it'll be red as anything because it grabs oxygen from the environment. because it has electrolytes that plants crave |
really
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Quoted: Quoted: I like to block a vein with my finger, run another finger along it to collapse it, then lift my other finger, allowing it to suddenly fill with blood and pop out. It's one of my favorite hobbies. I like to do pressure point arterial blocks on an arm. Let the blood drain out of the arm, making it have that look of a dead person. Once the block is removed, I am amazed at the speed of recovery of the color. That's kind of morbid. |