AEMCA Practice Exam

Question: 1 / 975

What are the four primary blood groups?

A, B, O, AB

The four primary blood groups are A, B, AB, and O, which are based on the presence or absence of specific antigens on the surface of red blood cells. This classification system is crucial for blood transfusions, organ transplants, and understanding blood-related conditions.

Group A has A antigens, group B has B antigens, group AB has both A and B antigens, and group O has neither antigen. This classification is foundational in blood typing and helps in avoiding immune reactions during medical procedures involving blood.

Other options may include additional details, such as the inclusion of Rh factors or the order of the groups, but the essential classification remains the same: A, B, AB, and O are the primary groups used worldwide. Understanding this system is vital for anyone involved in healthcare, as it ensures safe and compatible transfusions.

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AB, A, B, O

A, B, AB, O+

A+, B-, AB+, O-

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