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Bleeding on Mars

Originally posted by: Pliablemoose
No, at the worst, it'd be dark red.

Blood is never blue, it just looks that way through the skin.
Really? I always thought that unoxygenated blood actually was slightly blue.
 
Originally posted by: Pliablemoose
No, at the worst, it'd be dark red.

Blood is never blue, it just looks that way through the skin.

FASLE!!! Blood is blue. It is oxygenated but youself the oxygen escapes making it red.
 
Originally posted by: Pliablemoose
No, at the worst, it'd be dark red.

Blood is never blue, it just looks that way through the skin.

no, your veins are blue because the blood has no oxygen. if you cut a vein it bleeds red cause its hitting the oxygen. unoxygenated blood is blue.
 
Originally posted by: UDT89
Originally posted by: Pliablemoose
No, at the worst, it'd be dark red.

Blood is never blue, it just looks that way through the skin.

no, your veins are blue because the blood has no oxygen. if you cut a vein it bleeds red cause its hitting the oxygen. unoxygenated blood is blue.


No, it's not, trust me, I've drawn gallons of venous & arterial blood, once it isn't visualized through the skin, it's a dark red.

And I've drawn it into a syringe sans O2, so it didn't turn red after being exposed to air.

http://www.globalclassroom.org/blublud.html
 
when you look at a vein, what are you actually seeing ? the vein or the blood in it ? veins aren't really clear are they ?
 
Originally posted by: Pliablemoose
Originally posted by: UDT89
Originally posted by: Pliablemoose
No, at the worst, it'd be dark red.

Blood is never blue, it just looks that way through the skin.

no, your veins are blue because the blood has no oxygen. if you cut a vein it bleeds red cause its hitting the oxygen. unoxygenated blood is blue.


No, it's not, trust me, I've drawn gallons of venous & arterial blood, once it isn't visualized through the skin, it's a dark red.

And I've drawn it into a syringe sans O2, so it didn't turn red after being exposed to air.

http://www.globalclassroom.org/blublud.html

Exactly.
 
the oxygen will not instantaneously boil off from the blood. And the red colour is due to haemoglobin which is based on iron.
 
If you were outside on Mars and cut yourself you would pop like a baloon because of the pressure difference. 😉

Actually, if you didn't have some kind of pressure suit you would be in for some serious bruising. Also the extreme cold wouldn't be any good for you.
 
Originally posted by: Tom
when you look at a vein, what are you actually seeing ? the vein or the blood in it ? veins aren't really clear are they ?

the veins on the cadaver i worked on 3 months ago, the veins were blue. unoxygenated blood is not blue its the vein.
 
Oxygen doesn't just "leave" your blood if it was exposed to a near vacuum like on the surface of mars. The oxygen is BOUND to the iron in hemoglobin and is removed through another chemical reaction. Its not just simply dissolved in your blood.
 
Originally posted by: Kyteland
If you were outside on Mars and cut yourself you would pop like a baloon because of the pressure difference. 😉

Actually, if you didn't have some kind of pressure suit you would be in for some serious bruising. Also the extreme cold wouldn't be any good for you.

Exactly. A human cannot survive on Mars without a pressure suit. The atmospheric pressure on Mars is much less than Earth.
 
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