it may sound lime a daft question BUT someone told me that our blood is blue (which is why our veins are that colour) but then when it comes into contact with oxygen there is a chemical reaction which turns it red! am i being lied too??!!
2007-02-12 00:31:21 · 36 answers · asked by Caroline N 3 in Science & Mathematics ➔ Biology
You are right in both aspects. Blue blood is in the veins- they are oxygen deprived, and they are the vessels that take blood back to the heart. Red blood is in the arteries, capillaries, etc, because they are oxygen-rich.
2007-02-12 00:34:11 · answer #1 · answered by Anonymous · 3⤊ 5⤋
What Colour Is Blood
2016-10-04 05:49:06 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Sort of. You should first know that blood's first function is to transport oxygen from the lungs around the body and take carbon dioxide produced by cells back to the lungs to be got rid of. Blood is generally red. The blood in veins, which is deoxygenated as it has already traveled around the body, is a darker, more purply red, and when it has been reoxygenated by passing through blood vessels in the lungs, it binds with oxygen again and becomes more red in appearance. So blood is always red, just different shades depending on its oxygen status. Generally, when it is the arteries, taking blood from the lungs to the body, it is bright red, and when it is being carried back to the lungs in the veins, it is darker red.
2007-02-12 20:43:04 · answer #3 · answered by Anonymous · 0⤊ 0⤋
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2014-09-23 07:03:12 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Blood is red inside our bodies. Oxyzen is inside our body too.
2007-02-12 01:54:05 · answer #5 · answered by Junun 2 · 0⤊ 0⤋
the actual fluid part of blood is clear, the red blood cells loaded with oxygen give it the red colour in our 'arteries'.........but, the blue colour you have been told about in the 'veins' is correct when looking at it through your skin, however it is actually a ver deep red, as this is when the blood cells have delivered they're oxygen and are carrying carbon-dioxide towards the lungs to be re-oxygenated!!
2007-02-12 00:41:36 · answer #6 · answered by J9 3 · 2⤊ 0⤋
no, you are not being lied to. there is actually iron in your red blood cells. when the cells pass through your lungs, the iron molecules bind with oxygen, and they turn reddish -- like rust (literally the same reaction as iron rusting outside of your body!). Then the red cells are transported to your muscles and other tissues. The iron gives up the oxygen and loses some of that redish color (looks blue through your veins). If you pull blood from a vein (blood after visiting tissues) -- and blood from an artery (recently through the lungs) and compare them side by side, the artery/oxygen rich blood will look redder and brighter than the vein/oxygen deprived blood -- which is darker and almost bluish.
2007-02-12 00:43:09 · answer #7 · answered by snickersmommie 3 · 0⤊ 2⤋
that is correct,
Oxygenated blood (blood with oxygen) is red. This is the blood that has recieved oxygen from your lungs and is moving to tissues.
Deoxygenated blood (blood without oxygen) appears blue, but it is actually dark red. This is the blood in your veins and is travelling back to your lungs to get oxygen.
If you cut your vein, the blood will appear red because it come in contact with oxygen.
2007-02-13 12:09:20 · answer #8 · answered by insanity5400 2 · 0⤊ 0⤋
I think your friend making a jock blood always be red no matter it in the vein or out It is due to a pigment called "Hemoglobin" (consist the Iron) who carry the oxygen atoms to all over the body.
2007-02-12 01:29:31 · answer #9 · answered by Raja 3 · 0⤊ 0⤋
It's a common misconception based on illustrations in biology-books which utilizes blue and red to facilitate the differrentiation of veins and arteries.
But in reality, it's red. ALWAYS!
2007-02-12 06:18:59 · answer #10 · answered by Dr. Zaius 4 · 0⤊ 0⤋
Blood is red. When it leaves the lungs it is oxygenated, it is less red, but never blue. When blood has used up most of the oxygen and is headed back to the heart, it is at it's darkest red, bur not blue.
Blood is NOT blue. Veins are not blue. They may appear blue through the skin. Some anatomical models color some veins blue to indicate blood flow.
You may be lied to. Or the person is just plain ignorant.
2007-02-12 00:40:34 · answer #11 · answered by Anonymous · 2⤊ 2⤋