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key term - ABO blood group system

Definition

The ABO blood group system classifies human blood based on the presence or absence of antigens A and B on red blood cells. This system is crucial in transfusion medicine and can trigger immune responses if incompatible blood types are mixed.

5 Must Know Facts For Your Next Test

  1. The four main ABO blood groups are A, B, AB, and O.
  2. Type O blood lacks both A and B antigens but has anti-A and anti-B antibodies, making it a universal donor.
  3. Type AB blood has both A and B antigens but lacks antibodies against them, making it a universal recipient.
  4. Incompatible blood transfusions can cause severe immune reactions due to antibody-mediated destruction of red blood cells.
  5. The ABO system is genetically determined by the inheritance of alleles from parents.

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