Just a quick question, what colour is blood before it comes out? I got told it was dark blue..
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Just a quick question, what colour is blood before it comes out? I got told it was dark blue..
Nope, Red =]
Its more of a reddish purple, haemoglobin goes a deep red when it comes in contact with oxygen so before it does its pretty mucha dull red/purple.
it is blue in the veins when it comes in contact with oxygen it turns red thats like grade 9 chem u learn that :\
its usually blue when its got no oxygen (look at the veins on your wrist)
and when it comes in contact with air/ oxygen it turns red
Its not true that your blue is blue before it comes into contact with oxygen, its always a red-ish colour
I am wrong. Oops.
Da cleva man bel0 noez it all
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Exsactly the same colour as when it comes out, a darkish red. The vains only seem blue threw your skin becuse of the coulor of the vessle not the blood, and its only used in diagrams to make it clearer "/
I trust his awnser the most, he's like, the forum genius <333Quote:
Originally Posted by 01101101entor
It's the plasma isnt it?
Ye i'd rather dismiss my own answer than defy mentor.Quote:
Originally Posted by Bef
when its in the veins its blue normally its red/darkred.
Blood is only blue when no oxygen is reaching it. So when in your body it is always red ^^
I think. :P
Its always red. Veins are blue but the blood is still red.
Blood is red because blood cells are red, and blood cells never change color.
I hope that wasn't sarcasm...Quote:
Originally Posted by Cheep.
The red blood cells are only in your blood coming out of the heart... in arteries... when the blood is being pumped back into the heart they are goin thru veins, after theyve dropped off the oxygen to different parts of your body. so veins are blue and the blood inside is blue but in arteries they are red and always are...
No :rolleyes::rolleyes:Quote:
Originally Posted by Bef
Nixt (Forum Moderator) Please stick to the thread topic and do not post pointleslly.
Its red sometimes dark red.
I got a blood test and thats what colour it was.
Also if its not blue because in hospitals they inject blue/black dye into peoples veins and arteries to see if they are blocked. And if your blood was blue why would they use they same colour dye?
red, put your hand up to a light and it glows through red.
When blood is inside your body, it is blue - hence why your veins are that dark blue/purplish colour. It's blue as there's no oxygen, and therefore no haemoglobin.
When your blood is out of your body - say you had a cut - it meets with oxygen, and the present haemoglobin causes it to turn the redish colour you would always expect it to be.
It's a scientificly proven fact, that blood is blue when not in contact with oxygen (in the body).
Quoted from Wikipedia:
"In humans and other haemoglobin-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."
with oxygen - Red.
without oxygen - Blue.
Look at your veins&archerys for evidence :rolleyes:
Look at the post before yours :rolleyes:Quote:
Originally Posted by shenk.
It is light red when it is exposed to oxygen and a darker red when it is deoxygenated. Blood cells don't change colour, they stay the same colour of red, they only change shade "/
Your example is very bad. I can use it for this:
"People are grey. Look through the windows of a car with tinted windows. That is evidence."
People are blood. Windows are the veins. The car is the body.
Figure it out.
I would like to tell everyone using the blood test example that they are idiots. They take blood out of your veins, not arteries, they are far too small and not good for your health to be pumped straight out of. When they take out your blood from a test, it is a dark red. Please, no one say it is that colour because it has been oxygenated, that is very untrue, because if there is air in needle at the time, you would possibly have a heart attack "/
Also, look at the colour of your skin, it is pink. A good place to look is the palm of your hand. In winter your skin goes pale, or when youa re cold even because the blood retreats back into the middle of your limbs.
I swear plasma is a yellowy colour? And has nothing to do with blood, i thought that plasma was other things that weren't carried in the blood cells?Quote:
Originally Posted by Neurotic
Quote:
Originally Posted by The-Quiet-One
Plasma is clear with a very faint straw sort of colour, it is just shown as Yellow on alot of diagrams... And it has EVERYTHING to do with blood :) Let me explain:
Basically, blood plasma is the liquid part of the blood where all the other cells are found. As well as this, it contains Serum, which is the form of Blood Plasma which causes the clots when you cut yourself or something.. otherwise it would just bleed and bleed.
EDIT;; Sorry, I accidentally edited your post rather than quoting it >.<
You could just say when you cut yourself you can sometimes see a nearly clear sort of liquid forming over the wound.
Just because something appears on Wikipedia, doesn't mean it's a proven fact.Quote:
Originally Posted by Nixt
Wikipedia allows users to add their own entrys and opinions, so just because you got it from there in no way means it's correct.
I still stick by my original hypothosis, that de-oxygenated blood is blue, and oxygenated blood is red.
i agree with nixt, even after what everyone else has said. also, when you donate blood your blood doesnt contact oxygen, and its red?Quote:
Originally Posted by Nixt
So you are going to purposely stick by your own ignorance? What proof do you have? What evidence? The colour of the vein itself means nothing as you probably already know...
And wikipedia does allow people to edit entries, but they are moderated as far as I am aware and considering this is a pretty self-explainatory subject and loads of smart people use wikipedia, it would be correct :rolleyes:
Precisely, and if it did contain oxygen, when they put it back into someone elses body, or your own, they aren't going to be the healthiest people in the world. Oxygenated blood that has been oxygenated again would give someone a heart attack...Quote:
Originally Posted by Lion
actually.. im not sure, when i googled it half the pages said its blue, half said red soo...
arghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh hhhhhhhhhhhhhhhhhhhhh
actually i think its red now
i heard its white
are u just trying to confuse things even more or what??Quote:
Originally Posted by Billy♥
Tell you what, Its impossible to 100% prove so meh lol.
Even if you took all of the oxygen out of the air and slip yout wrists... still wouldent be great proof...
Its like saying that the earths center is filled with moltern iron as it has the same mass... But... no one acctually knows...
Or that every bonage of chemicals have been found through lab-bonding but you can't PROVE that ether.
The world is a lie. :rolleyes:.
Quote:
Originally Posted by Ostinato
I never said it was definite, you can't actually trust anything you see on any site, though Wikipedia is often correct and provides accurate information.
There are many things that back this up:
"The color of blood never actually is blue. When it is in the oxygen poor stage is does assume a red color that is not as intense as the red of the oxygen rich stage. When viewed through the skin this darker shade of red does appear to have a blueish color." SOURCE
"Blood gets its bright red color when haemoglobin in red blood cells picks up oxygen in the lungs." - i.e when it is still in the body. SOURCE
There are more.. I can provide you with more if you wish. But it seems that Blood is always red, though just darker (almost purple) while within the veins.
Precisely, I suggest everyone goes to their nearest hosptial and have a blood test. It is a dark red. You cannot say it has been oxygenated in the test because there is no oxygen inside a needle... Because if there was, it won't be good if it enters the body...Quote:
Originally Posted by Nixt
Quote:
Originally Posted by Acidulantes
Theres your answer people.
That is very false.Quote:
Originally Posted by Josh-H
Nope. It is just a deeper red, almost purple colour, when it is passing through veins.Quote:
Originally Posted by Josh-H
There is oxygen in the needle. It has been in contact with oxygen and therefore when it contacts the blood, the blood inside the needle turns red.Quote:
Originally Posted by GommeInc
Nixt, you say blood is a 'dark red/purple' colour - therefore, in some peoples eyes the blood is purple, whereas others would call this purple - blue.
http://www.opticsnotes.com/sciopticsfaq/veins.htm
Read that it, it makes quiet alot of sense to me. I sure hope you don't think you are his simple minded younger brother...