2006-12-18 14:33:53 · 25 answers · asked by LIZA 4 in Science & Mathematics ➔ Biology
Actually, when it is in your body it is a blue color, thats why your veins look blue. When your blood comes in to contact with oxygen, it gets its red color.
2006-12-18 14:38:02 · answer #1 · answered by Pace 5 · 0⤊ 2⤋
Blood looks blue under water as the red light frequency is the first to be cut out by the water.
Removing the red makes the blood look blue.
2006-12-18 22:36:53 · answer #2 · answered by AndyLoops 2 · 1⤊ 0⤋
Venous blood (blood that has travelled to your muscles and peripheral tissues and delivered most of its oxygen to the tissues) has a bluish cast. You can see this if you're thin enough and your veins show through your skin.
Blood fresh from the lungs where hemoglobin binds oxygen is bright red, and then becomes darker (bluish) once more when it gives its oxygen to the tissues.
Someone whose tissues are not receiving enough oxygen may appear cyanotic (cyan=blue). This is due to not enough blood reaching an area of the body, and the local tissues essentially suck all the oxygen from the blood, giving it a blue cast.
2006-12-18 22:40:07 · answer #3 · answered by pinkie 1 · 1⤊ 0⤋
When it has no oxygen, yes, it's blue. Take a look at the veins in your wrists where they show through the skin. They look bluish, because the blood in veins is deoxygenated.
When it does have oxygen, blood is bright red. If you cut a vein, the blood will turn red as it leaves the body because of oxygen in the air. Blood in arteries is already red because it has oxygen in it, on the way from the lungs to the muscles.
2006-12-18 22:36:48 · answer #4 · answered by Amy F 5 · 2⤊ 1⤋
I have worked in a hospital for 7 years. Blood is red at all times. They say its blue till it get O2 but that is wrong, When you give blood it is in an air tight tube and what color is it RED. Blood is always red,
you can ask a doctor he will tell you the same thing
2006-12-18 22:39:35 · answer #5 · answered by henrylford 1 · 1⤊ 1⤋
Yes, un-oxygenated blood is blue. You never see it as such because the second it leaves your body it turns red in the air. You can see some blue veins on your body, that is blood which is on its way back to your heart.
2006-12-18 22:36:46 · answer #6 · answered by dgbaley27 3 · 2⤊ 1⤋
blood is blue when it is with out oxygen when it has oxygen it is red for instance if you released blood into space the lack of oxygen would turn it blue
2006-12-18 22:44:29 · answer #7 · answered by Woody 2 · 0⤊ 0⤋
I have heard that blood is actually blue but, when you have a cut and the blood is exposed to oxygen - it appears red. Take a look at your veins.
2006-12-18 22:37:29 · answer #8 · answered by Cindy J 4 · 1⤊ 2⤋
yes while the blood is the body it is blue, when blood hits the air, it turns red...
2006-12-18 22:37:13 · answer #9 · answered by debra_ehu 2 · 0⤊ 2⤋
Well when you get a cut before it touches the air its blue.
2006-12-18 22:43:14 · answer #10 · answered by Anonymous · 0⤊ 1⤋