week 2 BLOOD TYPES

BLOOD types blood types are usually passed down though parents

here is a table showing diffrent blood types and how they are recognised

here is a load of info on blood types so you better be ready to get confused or get a headache. to make it easier ive made it as simple as possible or your head will probably explode

get your concentration hats on..... NOW

If you have blood group A then you've got A antigens covering your red cells.

Blood group B means you have B antigens,

while group O has neither,

and group AB has some of both.

The ABO system also contains lots of little antibodies in the plasma, antibodies being the body's

natural defence against foreign antigens.

So blood group A has anti-B in their plasma,

blood group B has anti-A (you probably get the picture at this stage).

To complicate matters though, group AB has none and group O has both of the antibodies.

Which means giving someone blood from the wrong ABO group could be fatal.

The anti-A antibodies in group B attack group A cells and vice versa.

Which is why group A blood must never be given to a group B person. Group O negative is a different story.

the Rh antigen changes everything.

Some of us have it, some of us don't.

If it is present, the blood is RhD positive, if not it's RhD negative.

So, for example, some people in group A will have it, and will therefore be classed as A+ (or A positive).

While the ones that don't, are A- (or, wait for it...A negative).

And so it goes for groups B, AB and O.

This effectively doubles the number of different blood types to be matched, because you shouldn't mix blood type A+ with blood type A-.

84% of the population is Rh positive. (And yes, that means the other 16% of the population is running around with Rh negative blood.)

this is my blog on blood,

hope your head gets better soon