If the blood in your veins is blue as there is no oxygen present, would you bleed blue in outer space?

Answer 1

First off ... the blood in your veins isn't blue. It is, however, a darker shade of red than the blood in your arteries.

IF the blood in your veins is blue as there is LESS oxygen present you would bleed blue in outer space.

You would also bleed blue on earth too.

Venous blood is darker than arterial blood (I draw venous blood and arterial blood from patients veins and arteries in the course of my normal working day). Venous blood does not magically turn red when exposed to air. It stays dark.

Answer 2

Interesting question; however, if you are in space, without a space suit, then bleeding is moot point as you'd be dead in any case. Inside your space suit, or space station, if you're breathing air, then there'll be no difference to being on earth.
However, lets assume, by some miracle, that your situation would arise and you were able to be in space with exposed skin and bleed and live long enough (totally impossible mind you) your blood would instantly boil off as in the vaccuum of space, the pressure difference means the molecules in blood would vaporise (instantly turn into a gas). Hence, you wouldn't see any colour because there'd be nothing to see.
However, as venous blood is not blue, rather dark red; you might be disappointed. The idea of blue venous blood comes from the latex injected into the venous system to differentiate it from the arterial system.

Answer 3

That's a cool question, no matter what color your blood is inside your veins that people perceive it to be. Your blood changes color when it hits the air, most likely to red, from oxygen, light, and temperature. The variance in oxygen, light, and, temperature with blood will determine the shade of brightness and the shade of red that people again, perceive it to be. They call that affect blooming. It would be hard to determine what the answer to your question would be unless an actual test was performed. It would also depend on the area of outer space the test was performed.

Answer 4

blood is always red due to heamaglobin composition that contains an Fe iron atom in its structure hence the red colour. It just appears blue when looking at veins and people presume that is the true colour.... where have u seen red vessels ( except in eye)
? in that case as if there is blue deoxygenated veins there should be red oxygenated arteries

Answer 5

wait wait why are there so many people that think that blood without oxygen is BLUE? it is not blue, it is very dark red. And thus if you really had to bleed in outer space, you'd bleed dark red.

Answer 6

Your blood is still red, just a deeper shade of red. It looks blue when viewed through a few layers of skin. Arterial blood is brighter red - if you saw that through a few layers of skin, it would look bluish as well, it's just that arteries are not generally visible and they have thicker walls than veins.

Answer 7

well, if you dont breathe oxygen, then there is no oxygen that can turn the blood red. so al your blood would be blue. so yes, i think :)

Answer 8

You have been lied to. Blood is red, even when its inside your veins.

Answer 9

on earth, skin and atmostphereic presure keep us together. in space you would be sucked apart and frozen so fast there would'nt be any pieces left to determine what color they are.

Answer 10

yes in theory