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General facts about blood
Blood is the only liquid in the human body along with its function, which cannot be replaced by any other liquid. An average adult has about 28-36 cups of blood in the body. Blood not only carries carbon dioxide and waste products back to the lungs, kidneys and liver for disposal but also carries oxygen and nutrients to all over the body. There are three main types of cells in the blood, which helps to fight infection and heals wounds. The cells are namely White Blood cells, Red Blood cells and platelets.
Blood being used
|Rate of people needing blood upon reaching hospital is 1 out of 10|
|20 units of blood donationís platelets are needed for a severe burn patientís treatment|
|People involved in mobile accidents and having massive blood loss needs blood transfusion of up to >50 packets of Red Blood cells.|
In our blood, there are two very important substances called antigens A and B, which are red blood cells too. An individual with antigen A belongs to the blood group A and that with antigen B belongs to blood group 'B'. If a person having antigens AB then the blood type will be 'AB' on the other hand the 'O' blood type is due to the absence of the antigens A and B in the blood.
The antibodies of the two antigens B and A are found in the blood plasma. The antibodies of the antigens are anti A and anti B. As for the blood groups 'A', 'B', 'O' and 'AB', the antibodies are anti A, anti B, none and anti A and anti B respectively.
Blood matching before the blood transfusion must be done accurately. When blood from two different groups is being mixed together, it might form clumps. The clumps are formed when red blood cells of a group and the plasma of the other group are mixed together. The clumps formed in the end are dangerous because it can lead to irreversible problems and worse case death. Any other people, regardless of blood type, can use the plasma in the blood when the red blood cells are removed.