2006-11-11 05:47:13 · 13 answers · asked by Jay 1 in Science & Mathematics ➔ Biology
Blood does not need oxygen to be red. Blood is never blue. Just because a hose is green, it doesn't mean the water coming out will be green as well. (referring to veins)
2006-11-11 07:45:46 · answer #1 · answered by Jason 2 · 0⤊ 1⤋
Interesting question. First, I thought about a spacesuit which leaves only a fingertip exposed, so blood leaving it would not be exposed to outside oxygen. However, if the person is alive and breathing inside the space suit, chances are the blood would be oxygenated that way, and may still come out red. I'll admit, this is just hypothetical on my part. I honestly don't know. Could also be that if it comes out of a vein (going back to the heart for more oxygen), it might be blue, depending on how much oxygen is left in it. Since I don't ever expect to be out in space, I guess I'll never know for sure...lol
2006-11-11 06:05:03 · answer #2 · answered by LSF 3 · 0⤊ 0⤋
Excellent question. If you mean if someone bleeds in a zero gravity environment, then no, it will bleed red as on Earth.
However, it's difficult to say what would happen when someone bleeds in a vacuum, because of what happens to the body in vacuum. All the capillaries in your skin would rupture, your eyes would expand possibly bursting, all the air and gas in your body, dissolved in blood, in your lungs, and everywhere else, would expand rapidly and catastrophically.
What actually happens when deoxygenated blood reaches the vacuum, I don't know. There's no oxygen, or anything for that matter, so it would probably stay blue. But the dissolved gases would probably turn it into a fine vapour, and what ever didn't boil off as it cooled, would freeze solid. Hard radiation would probably affect the proteins in blood to the extent that they just disintegrate quite quickly. A haemoglobin molecule probably wouldn't last any time at all, and so it wouldn't be red or blue.
2006-11-11 05:59:02 · answer #3 · answered by dm_cork 3 · 3⤊ 1⤋
If you get cut and are in "total space" and not within a capsule or a space suit and therefore not within an oxygenated environment, then you will be dead no matter what; no oxygen. Otherwise, space ships are pressurized and full of oxygen and the blood will be red.
2006-11-11 06:09:18 · answer #4 · answered by glotnib 1 · 0⤊ 0⤋
Did you ever have blood drawn by a doctor. It comes right out of the vein and into the bottle without being exposed to the air? It's red. There is no such thing as blue blood in humans.
2006-11-11 05:58:34 · answer #5 · answered by Anonymous · 0⤊ 0⤋
it would want to count the position you've been reduce, purple if it replaced into from a artery it would want to be purple, "blue" if from a vein, as no oxygen might want to blend with it in area. All blood is purple in the international because of the instant blending with oxygen, yet no such ingredient might want to take position in area. Now...if the oxygen replaced into sucked out of the purple blood cells after publicity to hoover, it may turn blue. Or the blood cells may purely burst. Take your p.c.., any between the may be authentic.
2016-11-29 01:02:07 · answer #6 · answered by ? 4 · 0⤊ 0⤋
it depends on if the blood is oxygenated before exiting the body or not. and since we dont want to kill our astronauts i dont think we will find out. but blood isnt ALWAYS red. it is blue when there is no oxygen in it such as when it is returning to the heart for more o2
2006-11-11 05:57:41 · answer #7 · answered by liz b 2 · 0⤊ 0⤋
The blood that is red (oxygenated) will come out red.
2006-11-11 06:52:45 · answer #8 · answered by Rayden 2 · 0⤊ 0⤋
The reason why blood is red is because it contains iron, not because it's oxygenated, so it will be red.
2006-11-11 12:23:48 · answer #9 · answered by lost in space 6 · 0⤊ 0⤋
i believe in the 1st place they will have to have oxygen to breathe IE: live...therefore the blood will be red....
2006-11-11 05:52:59 · answer #10 · answered by takeemout01 5 · 0⤊ 0⤋