NURSING EXAM QUESTIONS
PATHOLOGY AND GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hypersensitivity reactions:
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Represent immunological responses to an antigen that lead to tissue damage rather than immunity
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Occur when a person has been sensitized to an antigen
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Can be divided into four classes
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Include reactions based both on humoral immunity and cell-mediated immunity
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All of the above
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Explanation:
Detailed explanation-1: -There are four different types of hypersensitivity reactions. Some evidence suggests a potential fifth type, but this may actually be a subset of type 2 hypersensitivity reactions. Each type of hypersensitivity reaction is an extreme immune response to an antigen.
Detailed explanation-2: -Type II hypersensitivity reaction refers to an antibody-mediated immune reaction in which antibodies (IgG or IgM) are directed against cellular or extracellular matrix antigens, resulting in cellular destruction, functional loss, or damage to tissues. Damage can occur through multiple mechanisms.
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