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Questions and Answers
What is the primary characteristic of a hypersensitivity reaction?
What is the primary characteristic of a hypersensitivity reaction?
- An inadequate response to a pathogen.
- The complete absence of response to any antigen.
- A normal response to a typical antigen.
- An excessive reaction to an antigen, causing damage. (correct)
What is another term for antigens which trigger hypersensitivity reactions?
What is another term for antigens which trigger hypersensitivity reactions?
- Antibodies
- Pathogens
- Autoantigens
- Allergens (correct)
Which type of hypersensitivity reaction is referred to as anaphylactic?
Which type of hypersensitivity reaction is referred to as anaphylactic?
- Type 2
- Type 3
- Type 4
- Type 1 (correct)
What is a key characteristic of an anaphylactic reaction?
What is a key characteristic of an anaphylactic reaction?
What is the defining factor that causes damage as a result of hypersensitivity reactions?
What is the defining factor that causes damage as a result of hypersensitivity reactions?
Flashcards
Hypersensitivity reaction
Hypersensitivity reaction
A reaction to antigens (allergens) that is more severe than normal and causes damage.
Type 1 hypersensitivity: Anaphylactic
Type 1 hypersensitivity: Anaphylactic
An allergic reaction that is very severe and happens quickly.
Allergen
Allergen
A substance that triggers an immune response, which can be excessive in hypersensitivity reactions.
Rapid onset in Anaphylaxis
Rapid onset in Anaphylaxis
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Antigens/Allergens
Antigens/Allergens
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Study Notes
Immune Deficiency Diseases
- Hypersensitivity reactions are responses to antigens (allergens) that are greater than a normal response, causing tissue damage.
- Type 1 hypersensitivity is anaphylactic, a severe allergic reaction.
- Anaphylaxis has a rapid onset.
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