Blood

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What are the three types of blood cells?

There are three types of blood cells: red blood cells, white blood cells, and platelets.

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What do platelets help to do?

4. Platelets help stop bleeding by forming blood clots. 

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What are the four main blood groups?

The four main blood groups are A, B, AB, and O. 

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What do red blood cells do?

2. Red blood cells carry oxygen around the body and remove carbon dioxide. 

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How long do red blood cells live?

Red blood cells live for about 120 days. 

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Who was Karl Landsteiner and what did he discover?

Karl Landsteiner was a scientist who discovered blood groups (A, B, AB, and O).

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What is the function of white blood cells?

White blood cells protect the body from infections and diseases.

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What can happen if there are too many or too few platelets?

If there are too few platelets, excessive bleeding can occur, and if there are too many, blood clots can form. 

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Why is it important to match blood groups before a blood transfusion?

It is important to match blood groups because incompatible blood can cause a dangerous reaction and harm the patient.