If so, why? And, that's pretty cool when you think about it.
2007-01-11 05:42:44 · 13 answers · asked by Anonymous in Science & Mathematics ➔ Biology
In humans and other hemoglobin-using creatures, oxygenated blood is bright red. This is due to oxygenated iron in the red blood cells. Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in color. This has led to a common misconception that venous blood is blue before it is exposed to air. Another reason for this misconception is that medical charts always show venous blood as blue in order to distinguish it from arterial blood which is depicted as red on the same chart.
2007-01-11 05:51:25 · answer #1 · answered by Lady M 2 · 0⤊ 0⤋
"There exists a popular misconception that deoxygenated blood is blue and that blood only becomes red when it comes into contact with oxygen. Blood is never blue, but veins appear blue because light is diffused by skin. Moreover, the blood inside is dark red and exhibits poor light reflection. From a physiological perspective, veins and arteries appear similar when skin is removed and are seen directly. "
2007-01-11 06:13:27 · answer #2 · answered by Noodle 2 · 0⤊ 0⤋
no it is a myth that the blood is green before it is exposed to oxygen.
but it is described as blue when it is exhausted of oxygen.
2007-01-11 05:49:05 · answer #3 · answered by Michael B 1 · 0⤊ 1⤋
No, human blood is ALWAYS red. some of my peers had similar inquiries but i disproved them. because there is oxygen being carried through your blood at all times your blood is always in contact with Oxygen.
2007-01-11 05:51:37 · answer #4 · answered by pooshna66 3 · 0⤊ 1⤋
no, you can see this when the blood ruches to you cheeks when you are hot and thwy turn red. but there is a type of lizard with green blood.
2007-01-11 05:53:35 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I think its blue because its deoxygenated blood. Thats how you go blue if you dont get enough oxygen :p ..xx
2007-01-11 05:50:09 · answer #6 · answered by madblonde91 1 · 0⤊ 1⤋
if i remember correctly, it's blue.
it turns red when the iron in your blood mixes with oxygen.
2007-01-11 06:08:41 · answer #7 · answered by Anonymous · 0⤊ 1⤋
ive heard that is was blue but thats not true its always red!! lol it look green (the veins) but its to due with ya skin and tissue over the veins!! GOOD QUESTION THOUGH!!
2007-01-11 05:55:58 · answer #8 · answered by SEXY CRML 3 · 0⤊ 0⤋
the red color of blood is due to the color of red blood corpuscles
(R.B.C) which is red color ,these R.B.C. represent more than 90 percent of the total blood corpuscles.
2007-01-11 06:02:42 · answer #9 · answered by basil_academia 2 · 0⤊ 0⤋
Nope. It's a dark red color.
2007-01-11 06:12:58 · answer #10 · answered by Anonymous · 0⤊ 0⤋