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🩸 Blood Types and the ABO System

(1)
A blood type (also called a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). You can receive blood from a donor with the same blood type as you. You can also receive blood from a donor with a compatible blood type. There are different systems to classify blood types. In the ABO system, we have four main types:

• Type A blood has the Group A antigens and makes antibodies to fight Group B blood.

• Type B blood has the Group B antigens and makes antibodies to fight Group A blood.

• Type AB blood has both Groups A and B antigens, but doesn't make antibodies for either one.

• Type O blood doesn't have either type of antigen.

(2)
So, who can receive and who can donate in the ABO system?

• Type A only receives from A and O.

• Blood type B receives only B and O.

• AB blood type receives all types, and only can donate to people with type AB blood.

• Type O blood receives only from O.

• Blood type O negative is given to all blood types.

📝 Questions

1. Which of the following is NOT TRUE about the ABO system?
   A. All blood types are compatible with themselves
   B. Type O is compatible with all other blood types
   C. Type AB can only be given to patient AB blood
   ✅ D. The ABO system is the only system to classify blood types

2. The word “compatible” in paragraph (1) is closest in meaning to …
   A. Available
   ✅ B. Matching
   C. Common
   D. Identical

3. Which blood type can accept from any other blood type?
   A. Type A
   B. Type B
   C. Type O
   ✅ D. Type AB