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Blood is always red, never blue.

Human Anatomy, Physiology, and Medicine. Anything human!

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What color is deoxygenated blood?

Poll ended at Fri Apr 29, 2005 5:05 am

Red
4
80%
Blue
1
20%
 
Total votes : 5

Postby victor » Fri Aug 11, 2006 3:17 am

MrMistery wrote:hemoglogin can't turn blue!!!!


Yo...I agree !!! Hemoglobine is made of heme and globine protein where heme is a complex of porphirine with a Fe2+ ion attached in its center and this complex gives the red color....NEVER BLUE !!!
VIVA RED COLOR !!! :lol:
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Postby Bellion » Sat Aug 12, 2006 10:18 am

It isn't a misconception, deoxygenated blood is blue, when the oxygen in the blood had been used by the muscles the blood is the deoxygenated and blue until it is pumped to the lungs where is makes contact with oxygen which turns it red again. which is why when you get a cut blood is red... because of the oxygen in the air
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Postby canalon » Sat Aug 12, 2006 12:51 pm

An easy experiment: Go to a blood clinic and give your blood. They take veinous, non oxygenated, blood. And It is not exposed to oxygen during the process. What is the color of the bags? blue or dark red?
Could be done with blood test samples taken with one of those vacuum tubes.

I gave my blood, and I have spent one summer in hospital lab and have seen many blood bags and blood sample, and I have never seen blue blood. The blue blood is the misconception. The oxygenated blood is bright red, the deoxygenated one is dark red/brownish.
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Postby victor » Sat Aug 12, 2006 1:43 pm

You wanna blue blood?? fine...
Just change the Fe2+ ion in the heme complex into Cu2+ ion....there you'll got a blue blood..:lol:
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Postby canalon » Sat Aug 12, 2006 2:07 pm

May not even work victor. The olor of copper solution depends on the pH. When acidic they have a nice green color.
But I don't know at what pH the change occurs.

But Petri plates spiked with CuSO4 are green at pH 3,5 and turn green when pH is adjusted at pH 7
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Postby Dustfinger » Sat Aug 12, 2006 2:08 pm

I guess deoxygenated blood is red because hemoglobine is only the substance binding oxygen, but it´s still in the blood even if it has less oxygen bound. A i right ?
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Postby opuntia » Sat Aug 12, 2006 7:09 pm

I think i know why we have taht misconception within us, it's because when we first learn about the oxygenated and deoxygenated blood, we are taught that the deoxygenated blood is darker than the oxygenated blood, and in those diagrams i mean which are in our text books all the vessels that carry deoxygenated blood are coloured blue while the vessels that carry oxygenated are coloured red, so the crazy idea that deoxygenated boold is blue gets accumulated in our subconcious mind!:roll: :roll:


But i think if we all do abit reasonable thinking then everyone will know taht both oxygenated & deoxygenated blood is red, but of different shades. lol if there is anyone who can't believe that deoxygetnaed blood is red, watch a wound or a prick and observe very well to see if a blue coloured liquid comes out :lol: :lol: :lol:
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Postby MrMistery » Sat Aug 12, 2006 8:05 pm

I can't believe this topic is still going. I'm going to start a topic and ask what color an electron is. At least that would be debatable.
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Postby Amrik » Sun Aug 13, 2006 5:01 am

Well.i m still wondering,...y do we lose 21grams wen we die?!!
hehe tell me plz
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Postby opuntia » Sun Aug 13, 2006 4:22 pm

Do we lose 21 grams when we die? :? :? I guess i would never understand it...because i have never died before :lol: :lol:
Perhaps that amount could be due to a complete full stop in breathing??? :roll: :roll: And could that 21gram account for the gas in the lungs?Or teh gas that gets into the lungs when inspiration takes place?
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Postby MrMistery » Sun Aug 13, 2006 6:36 pm

Not really. The popular mith is that you 21 grams is the weight of the soul. But this is just a modern mith, and both a little science or a little philosophy can prove it wrong.
Science: People, weight can not dissapear! It is proven by every physical law ever discovered! unless you are traveling at the speed of light..
Philosophy: The soul is not a part of the material world. Just like an angel's halo doesn't weigh anything, neither does a human's soul.
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21 grams

Postby cracked_doc » Sat Aug 19, 2006 2:26 pm

http://perdurabo10.tripod.com/id787.html ....have a look at this if you might...
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