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what is the real true color of blood?

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what is the real true color of blood?

Postby Dr. Riboul » Tue Jun 27, 2006 5:59 pm

Everybody says that it is blue on the inside but red on the outside due to oxygen. But then others believe that it is bright red on the inside and when it hits oxygen it just gets darker. The reason why I am posting this is because I am doing research on it and my teacher said that if I get the answer wrong I would get a F. But who should I believe?
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Postby canalon » Tue Jun 27, 2006 6:03 pm

The question has already been posted and answered here. This was found using our marvelous serch engine :)
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Postby +R@cY » Wed Jun 28, 2006 3:34 am

I always thought it was a purplish colour before it hits oxygen. Interesting!
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true color of blood

Postby ddann » Fri Jun 30, 2006 1:42 pm

blood is NEVER blue or purple! Oxygen saturated blood is darker red.
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Postby herb386 » Fri Jun 30, 2006 4:51 pm

If blood is never purple then why are veins blue/purple? I always thought it was because of the blood but I have to admit that the blood is red when it comes out! That's true even when you take blood out into a syringe so it can't be the contact with the air that changes it's colour.

I'm confused.
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Postby canalon » Fri Jun 30, 2006 4:59 pm

The answer is given in the link provide in the secon message of this thread!
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Postby arlawson1 » Sun Jul 09, 2006 2:46 am

Blood is always red. It is the melanin that makes the blood look blue... as far as dark- and bright-colored blood, it depends on the amount of oxygen in the blood.
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