Is it true that blood is blue in your body but when it hits the air it turns red?

Answer 1

No, not true at all. Oxygen-containing blood in your body, which is carried in arteries, is red, while oxygen-poor blood in your body is a darker, deeper red. No blue blood.

Answer 2

Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in color. This has led to a common misconception that venous blood is blue before it is exposed to air. Another reason for this misconception is that medical charts always show venous blood as blue in order to distinguish it from arterial blood which is depicted as red on the same chart.

Answer 3

No. It is different shades of red. We say "blue" and show it that way in medical diagrams, but the real thing is not blue.

Venous blood sometimes look blue when seen through the skin. However, venous blood is actually a dark red color (but looks purple through the opaque skin), while arterial blood is bright red. The appearance of veins as dark blue is a wavelength phenomenon of light, having to do with the reflection of blue light away from the outside of venous tissue if the vein is @ 0.02in deep or more. This is due to the difference in color between deoxyhemoglobin and oxyhemoglobin; the red color ultimately originates from the iron atom in heme. If blood is drawn for a medical test, the dark red color can be seen; however, if it is exposed to oxygen in the air, it will turn bright red like arterial blood.

People who are lacking oxygen turn blue, sort of. It's really more like a grayish purple.

Answer 4

the arterial blood - which has more oxygen- is somehow bright red, and the venous blood- that has less oxygen - is dark red. no blue color excites in human - unless they have some kind of hereditary disease- .
by the way, the very very bright blood could mean carbon monoxide poisoning, a very dangerous disease that needs immediate emergency.

Answer 5

Look at the veins on your wrist, mine are almost blue. I know blood lacking oxygen is darker and purplish, but I've never seen a health video that shows blue blood.

Answer 6

Blood in your body isn't always blue. Every time you inhale, the oxygen goes to your lungs then to your blood. Blood is red when it is exposed to oxygen. Your blood goes to the organs and muscles through your arteries, wherever it is needed then it comes back blue because there's no more oxygen. When you cut yourself, blood comes out. Because there's oxygen everywhere, blood is exposed to oxygen. Therefore, it turns red.

Answer 7

No, the reason why the blood becomes red because of carbon dioxyde which carry by blood. Blood is responsble for carrying the nurients,carbon dioxydeto and oxygen our body....at first our blood is red when it's carry oxygen needed by our body and bloods becomes blue when our body already used the oxygen, and the waste is carbom dioxyde.

Answer 8

Blood in veins with depleted oxygen is blue, blood in arteries is red. Once blood is exposed to oxygen it becomes red, which is why even a bleeding vein produces red blood from your skin.

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Answer 9

Non oxygenated blood is blue. You can see it in some of your veins. Once this blood passes through you lungs it is enriched with oxygen, which turns it red.

Answer 10

Well the blood that isnt rich in oxygen and is filled with carbon dioxide is purpleish blue.
So yes.

The blood inside you that is still rich in oxygen, however is still red.