I heard that before at school but I don't think Its true. Some people say its true but some people say its not. Which is true?
2007-09-10 12:00:05 · 13 answers · asked by Anonymous in Science & Mathematics ➔ Medicine
NO, blood that is not oxygenated (venous blood) is a dark maroon color, and oxygenated blood (arterial blood) is a bright red color. It is the walls of the vein that look blue NOT the blood inside them. Think about it, the last time you had blood drawn for labs was it blue? NO I didn't think so!!!
2007-09-10 13:23:18 · answer #1 · answered by 1sleepymama 7 · 3⤊ 0⤋
NO NO NO NOOOOO, Blood is red all of the time, this is due to haemaglobin subunits that make up the red blood cell contain iron. just because our veins are blue does not mean that blood is blue too it just happens that the wavelength of light we see is blue as when you look at your veins you are looking through skin the vessle wall etc . Have a look at your eyes the vessels in your eyes are red we see the true color as there is less tissue etc is obscuring the colour. I hope that makes sense but it is red, here confirms this http://en.wikipedia.org/wiki/Blood
http://www.biology-online.org/biology-forum/about763.htmlWith regards to the comment about blood not being oxygenated if you think of this in a physiological way .. the entire reason for blood is to be oxygenated in able to transport oxygen around although granted it could be argued that blood returning via a vein is doxygenated thus blue, but take a look at an artery too back of leg, inside of arm you will see that appears blue even though arteris carry oxygenated blood thus that argument has been disproved. I hope this helps you and everyone else :) good luck
2007-09-10 12:57:37 · answer #2 · answered by Tracey S 2 · 6⤊ 0⤋
Blood is not blue. It is a bright red when it is in the arteries. This is because it has left the lungs and has oxygen in it, which is one of bloods many responsibilities. It is a dark red when it is in the veins. This is because it has been throughout the body and has given its oxygen that it carried in the arteries to the organs of the body. It is now on its way back through the heart and lungs to pick up new oxygen It is very dark red, but never blue...
2007-09-10 14:42:31 · answer #3 · answered by In trouble 1 · 3⤊ 0⤋
Tracey S. is right, i remember in anatomy class the anatomist told us about this, blood is ALWAYS red, the only difference is whether its bright or dark red.
veins are blue for another reason, not because the blood inside is blue
2007-09-10 15:37:03 · answer #4 · answered by pezcadorissimo 2 · 0⤊ 0⤋
Only if you're an octopus. They have copper-based molecules that carry oxygen, and their blood has a bluish tinge. (Or so I've read. I don't make octopi bleed.)
I did a podcast on this subject. It's only a minuite long. Have a listen:
http://www.medicalminutepodcast.com/?p=27
2007-09-10 15:27:02 · answer #5 · answered by Pangolin 7 · 3⤊ 0⤋
Yes, blood turns red when exposed to oxygen.
2007-09-10 15:40:30 · answer #6 · answered by Caduceus of Hermes 3 · 0⤊ 2⤋
Yes it is very true. It is actually a blush-purple color since the hemaglobin is not carrying oxygen. It turns red when it combines with oxygen. No way to test it though, as soon as your blood combines with oxygen it turns red.
2007-09-10 12:55:08 · answer #7 · answered by originalsmartie 4 · 0⤊ 4⤋
Well, now, that's what they told me in pharmacy school,...as to the truth,..I ain't ever been inside to see the stuff before it starts to leakin' out,...
2007-09-10 15:40:38 · answer #8 · answered by longhair140 4 · 0⤊ 2⤋
yes the oxygen turns the hemoglobins red.
2007-09-10 12:44:35 · answer #9 · answered by gymnastbaby 3 · 0⤊ 5⤋
Yes. Find a vein.
2007-09-10 12:07:38 · answer #10 · answered by tigerlily23 3 · 0⤊ 6⤋