2006-10-29 13:14:46 · 24 answers · asked by Captain 2 in Health ➔ Other - Health
As someone who has autopsied more than six thousand people, I can assure you that blood is always red. It is brighter red when fully oxygenated, and darker red when it is full of carbon dioxide. The blue appearance of the veins at the surface comes from their depth in the skin, like the blue nevus (a type of mole) which appears blue, but is not really.
The only blue blood is in very primitive invertebrates such as the horseshoe crab.
2006-10-29 13:18:22 · answer #1 · answered by finaldx 7 · 1⤊ 0⤋
Oxygenated blood that comes from the heart is red. When the oxygen has been used and is traveling back to the heart to get reoxygenated it is still red. But very, very dark red. It looks blue in the veins on a lot of peoples arms and legs. That is the blood going back to the heart.
2006-10-29 21:18:50 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Yes it is true, somewhat. Your blood is blue in your veins only, because that blood does not contain any oxygen, but rather it contains carbon dioxide which will be transported to the lungs, so it can be released as a waste product. Arteries contain blood with oxygen and transport it away from the lungs to other parts of the body, so that it can be used in processes like the Krebs Cycle. However, if you cut a vein, the blue blood within it will turn red as soon as it makes contact with oxygen. So basically carbon dioxide turns blood blue, and oxygen turns blood red.
2006-10-29 21:26:33 · answer #3 · answered by Joey W 1 · 0⤊ 3⤋
Blood is NEVER blue.
Blood is dark red (venous) or bright red (arterial).
Our veins look blue because we are looking at them *through* our skin. The blood inside them is dark red and it doesn't reflect light very well.
The blood you see when you get hurt is usually venous blood.
Arterial blood comes out in spurts. It spurts every time the heart beats. I hope you never see that.
2006-10-29 21:26:09 · answer #4 · answered by Jay 6 · 2⤊ 0⤋
NO
The colour of blood depends on how much oxygen is being carried in it.
Arterial blood is bright red, veinous blood is a darker red as there is less oxygen in it.
Nowhere in the body is it blue
2006-10-29 21:16:41 · answer #5 · answered by Anonymous · 4⤊ 0⤋
No, blood is a deep red color. It only looks blue because of the color of your veins and the mixture of your skin tone. Blood is always, and will always be red. That is just a myth.
2006-10-29 21:22:14 · answer #6 · answered by Teehee 1 · 1⤊ 0⤋
you have 2 channels in ur body which carry blood ...arterial which is bright red ..and venous which is somewhat dark and still of course red...so no blue blood in ur body...by the way if you see a human with a chronic chest diseas or copd [chronic obstructive pulmonary disease] you can notice that his tongue and lips are very very dark red due to the lack of oxygen...
2006-10-29 21:27:29 · answer #7 · answered by gampo3 1 · 1⤊ 0⤋
Good question. I was told that once too. That the blue blood is rich in carbon dioxide and when oxygenated it turns red.
2006-10-29 21:17:07 · answer #8 · answered by Eldude 6 · 0⤊ 2⤋
no its always red only when it hits the air it turns a darker red
2006-10-29 21:20:50 · answer #9 · answered by Dr. Feel Good 2 · 0⤊ 0⤋
That's a common misconception.
Blood is composed of various hues of red.
Veins range from blue to purple.
2006-10-29 21:22:16 · answer #10 · answered by Yngwie Malmsteen 1 · 0⤊ 1⤋