What colour is blood?

[Nixt]

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."

[shenk.]

with oxygen - Red.
without oxygen - Blue.

Look at your veins&archerys for evidence :rolleyes:

[GommeInc]

with oxygen - Red.
without oxygen - Blue.

Look at your veins&archerys for evidence :rolleyes:

Look at the post before yours :rolleyes:

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.

[Charlie]

It's the plasma isnt it?

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?

[Nixt]

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?



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.

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 >.<

[GommeInc]

You could just say when you cut yourself you can sometimes see a nearly clear sort of liquid forming over the wound.

[Ostinato]

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."

Just because something appears on Wikipedia, doesn't mean it's a proven fact.

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.

[Pizza]

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."

i agree with nixt, even after what everyone else has said. also, when you donate blood your blood doesnt contact oxygen, and its red?

[GommeInc]

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:

i agree with nixt, even after what everyone else has said. also, when you donate blood your blood doesnt contact oxygen, and its red?

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...

[Pizza]

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