Is human blood really blue and only turns red when it is exposed to air?
By galvernize
@galvernize (23)
4 responses
@sarahruthbeth22 (43143)
• United States
9 Jun 07
Yes it is true.I can tell when I look at my wrist, I can see my veins are blue.I was taught that it was oxygen in the air that makes it turn red.
1 person likes this
@galvernize (23)
•
9 Jun 07
I'm not alone, thanks for your reply ,it seems weird but it makes sense, thank you
1 person likes this
@gaminemadcap (160)
• United States
9 Jun 07
No, human blood is red. When I give blood at the blood center the blood still comes out red, even though it is not exposed to air.
1 person likes this
@galvernize (23)
•
9 Jun 07
when you gave blood the reason it turned red was because their was air in the tubes ect. maybe
@emckee (465)
• United States
9 Jun 07
that just doesn't make sense, that's like asking if when a tree falls in the forest, can you hear it land or something. why do you think humans have a slight pink tone to their skin? or why your face gets red when your blood pressure goes up? that's silliness! lol
