MICROANATOMY

Detailed explanation-1: -Universal donors are those with an O negative blood type. Why? O negative blood can be used in transfusions for any blood type.

Detailed explanation-2: -Those with O positive blood can only receive transfusions from O positive or O negative blood types. Type O positive blood is one of the first to run out during a shortage due to its high demand.

Detailed explanation-3: -People with type O-blood are called universal donors because their donated red blood cells have no A, B or Rh antigens and can therefore be safely given to people of any blood group.

Detailed explanation-4: -Although the blood type O+ can donate blood to all positive blood types (A+, B+, AB+, and O+), it is not a universal donor. Blood type O-is the universal blood donor, meaning that people with this blood type can donate blood to all other types with a lower risk of causing serious reactions.

Detailed explanation-5: -O negative blood is often called the ‘universal blood type’ because people of any blood type can receive it. This makes it vitally important in an emergency or when a patient’s blood type is unknown.