2007-12-02 08:15:22 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Blood is never blue. Some slow people will tell you that it's blue when it's deoxygenated and red when it's oxygenated. A simple way to test this would be to donate blood. If blood were blue in veins, then surely you would see a bluish mixture in a bag containing a huge amount of venous blood and hardly any air. But what color is the blood in a donor bag? RED. Is there any evidence of a color change upon exposure to oxygen? NO. If the color changed due to exposure to air, then it would only react on the surface, hence there would be a bluish mixture. We see a uniform color throughout donated blood. Surely it's not possible for any chemical reaction to occur in under a millisecond to such a large volume of blood.
2007-12-02 08:28:36 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Do Humans Have Blue Blood
2016-11-01 14:45:23 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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RE:
Do humans have blue blood?
2015-08-16 17:13:22 · answer #3 · answered by Agatha 1 · 0⤊ 0⤋
Of course not. Haemoglobin is the pigment that gives blood its colour, and is a sort of purplish maroon colour. Veins arrying deoxgenated blood appear blue through the skin, but are not.
Oxyhaemoglobin, haemoglobin that is combined with oxygen, is red.
2007-12-02 08:28:55 · answer #4 · answered by Bullet Magnet 4 · 1⤊ 2⤋
It really depends on how you say it.
If you are related to the royal family you are said to have "blue blood/royal blood)
In biology your blood is purple when it is not oxygenated. This is usually in the arteries and is red when it is oxygenated usually in the veins.
2007-12-02 08:44:35 · answer #5 · answered by !Lloyd! 2 · 0⤊ 2⤋
the vains are blue and blood is red depending on how much iron.
2007-12-04 11:03:40 · answer #6 · answered by Amanda G 1 · 0⤊ 0⤋
No, it's iron-based. If it were copper-based, it would be blue. The term "blue-blood" came from the Spanish grandees who never worked, never went out into the sun, and so had veins showing blue against pale skin.
2007-12-02 08:19:44 · answer #7 · answered by Anonymous · 3⤊ 2⤋
No, artists only depict it that way. The deoxygenated blood is still red just darker.
2007-12-02 09:03:10 · answer #8 · answered by birdie 3 · 2⤊ 0⤋
Yes. Human blood has hemoglobin in it. When oxygen is present in the blood it binds to hemoglobin causing a chemical reaction. This reaction results in "red" blood. When the blood does not have oxygen (such as when it is in the venous system returning to the heart or from the heart to the pulmonary system to get oxygenated) it is blue.
2007-12-02 08:21:19 · answer #9 · answered by Court C 1 · 1⤊ 6⤋
No, hemoglobin is red.
2007-12-02 08:18:51 · answer #10 · answered by OKIM IM 7 · 2⤊ 2⤋