You know how people say that your blood is blue until it hit's air and then it's red. Why is that?
2007-01-06 22:47:22 · 9 answers · asked by lilnif 2 in Health ➔ Other - Health
It's always red... even in your veins (the iron in the red cells and other things in your blood make it red). It's lighter red if it has a lot of carbon dioxide in it and darker red if it has a lot of oxygen - this depends on what vein it comes from - some veins transport only blood with oxygen, others blood with carbon dioxide.
Blue blood is an expression used to describe either a person in the high society (the Queen of England is blue blooded) or a heart disease in which blood with oxygen from the lungs mixes with blood with carbon dioxide from the rest of the body inside the heart (this shouldn't happen and it's a very serious disease).
You'll find more information here: http://en.wikipedia.org/wiki/Circulatory_system
http://en.wikipedia.org/wiki/Blood
2007-01-06 22:57:02 · answer #1 · answered by Khali 3 · 0⤊ 1⤋
it does not change colour at all. That is just a myth. It is always red, people say it is blue because they think that is the blood colour inside your veins (look at your wrist) but its not the blood that is blue it is just the actual vein.
2007-01-07 06:53:03 · answer #2 · answered by Anonymous · 0⤊ 1⤋
Its not blue its Dark Dark Red like Marune. Also its a Chemical Reaction
2007-01-07 07:00:59 · answer #3 · answered by stick to my guns 2 · 0⤊ 1⤋
It's red before it hits the air too. It's iron based. So it's red.
2007-01-07 06:49:24 · answer #4 · answered by Brother Mike 4 · 0⤊ 2⤋
it's red while in the body too...ever see how it looks during a blood draw as it goes into the syringe and vacutainer tube, it's red. it hasn't been exposed to air yet.
EDITS: don't you just love the thumbs down idiot bandit? somebody needs to learn how to get positive attention says me. now take yourself off to the naughty chair until you can get your button pushing finger under control.
2007-01-07 06:55:05 · answer #5 · answered by pirate00girl 6 · 0⤊ 1⤋
Blood is always red.
2007-01-07 08:28:38 · answer #6 · answered by umesh 3 · 0⤊ 1⤋
you'r blood change's to red when it hits the air because of the oxyen making it change colour hope that answered ya question (^.^)
2007-01-07 06:50:32 · answer #7 · answered by sweetbabymarie 2 · 1⤊ 2⤋
It absorbs oxygen and that changes the hemoglobin molecules.
2007-01-07 06:49:40 · answer #8 · answered by Barabas 5 · 2⤊ 0⤋
because it gets oxygen
2007-01-07 06:49:28 · answer #9 · answered by Anonymous · 1⤊ 0⤋