What colour is blood?

They are white... Or clear I believe?

*does A Level biology*

It's actually purpley blue :P

White blood cells contain lymphocites and phagocites which protect the body

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Originally Posted by France

*does A Level biology*

It's actually purpley blue :P

White blood cells contain lymphocites and phagocites which protect the body

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And the ink front of the american dollar is printed in green, try actualy looking at it :rolleyes: Unless your suffering copper posioning or had a blood transfusion with a crab, you have red hemoglobin. Not hemocyanin, which is the blue blood some custations have "/
Try asking your biology teacher, and they will most likly be happy to tell you its red, although possibly may be sceptical about letting you continue takeing a course...

It's red when its oxygenated with haemoglobin (and becomes oxyhaemoglobin).
When its deoxygenated, after losing oxygen to muscles and organs etc, it becomes a bluey purpley colour.
And I think you mean "crustaceans". :)


EDIT: I wasn't saying the haemoglobin was blue.

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Originally Posted by France

It's red when its oxygenated with haemoglobin (and becomes oxyhaemoglobin).
When its deoxygenated, after losing oxygen to muscles and organs etc, it becomes a bluey purpley colour.
And I think you mean "crustaceans". :)


EDIT: I wasn't saying the haemoglobin was blue.

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At no point does it become blue or blue like, purple can be loosly applyed, but for all intencive purpsos the closest it becomes it a darker red. At no point does it ever become blue, since there is no blue material or anything with that hue in your blood stream at any time... barring copper poisoning, but youd be to dead to notice with quantitys of copper in the blood youd need.
haemoglobin being are pretty much the colour of the blood, since the blood is mostly comprised of them "/ other than that theres your platelets, and white blood cells, which are also not blue, and the plasma which is yellowish if anything.
So theres nothing in there that could ever cause your blood to look blue?

As a subnote since your a bioloy student, i suppose you could make the case a normoblast is a purplely blueish colour, but there in a very low concentration, and its colouration is mainly becuse of its nucluius as opposed to the cell, and im not sure they would even be able to carry any oxigen in the blood stream at that level of maturation "/

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Originally Posted by 01101101entor

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 "/

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It's red, you know when u stand on your head, all the blood rushes to your head, its red then... no oxygen comes with contact at that point... so yeah... always red :]

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Originally Posted by Elliott

It's red, you know when u stand on your head, all the blood rushes to your head, its red then... no oxygen comes with contact at that point... so yeah... always red :]

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Are you joking? How old are you?

You're trying to tell me that when you stand on your head the oxygen from your blood diseappears? I really hope you're joking or you are a young child..

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Originally Posted by France

*does A Level biology*

It's actually purpley blue :P

White blood cells contain lymphocites and phagocites which protect the body

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You will find it is always a reddish colour and is never blue as mentor has said as I asked my Biology teacher who has
*done as,a level and most likely degrees in biology*

Well to throw in my thoughts to the pile:

Blood is red.

Deoxygenated it's a deeper red, but still red nonetheless. The blueness of veins is caused by the way light penetrates the skin.

Some interlligence has returned to the thread it seems :D Blood = red, not blue, Claims to the contary are kinda stupid "/