Hypersensitivity Types Quiz
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Questions and Answers

Which type of hypersensitivity reaction is distinct from type II hypersensitivity?

  • Type V
  • Type III
  • Type IV
  • Type I (correct)

How can exposure to allergen occur in type II hypersensitivity?

  • Direct contact
  • Ingestion
  • Inhalation
  • Injection (correct)

In which type of hypersensitivity reaction can allergen exposure happen through inhalation?

  • Type IV
  • Type I (correct)
  • Type II
  • Type III

Which type of hypersensitivity shares similar characteristics with type II hypersensitivity?

<p>Type III (C)</p> Signup and view all the answers

Which type of hypersensitivity has no direct relation to type II hypersensitivity?

<p>Type IV (D)</p> Signup and view all the answers

Which type of hypersensitivity reaction involves antibody-mediated cellular dysfunction?

<p>Type II (C)</p> Signup and view all the answers

In which type of hypersensitivity reaction are antigens usually intrinsic components of cells or tissues?

<p>Type II (C)</p> Signup and view all the answers

Which mechanism characterizes Type II hypersensitivity reactions?

<p>Antibody-mediated cellular dysfunction or destruction (A)</p> Signup and view all the answers

What is the time frame for the onset of Type II hypersensitivity reactions?

<p>Minutes to hours (C)</p> Signup and view all the answers

Which type of hypersensitivity reaction involves immune complexes depositing in tissues?

<p>Type III (D)</p> Signup and view all the answers

When does the tuberculin (Montoux) reaction peak after the injection of antigen?

<p>48 hours (B)</p> Signup and view all the answers

What is the classical example of hypersensitivity discussed in the text?

<p>Tuberculin (Montoux) reaction (C)</p> Signup and view all the answers

In which type of hypersensitivity reaction does the tuberculin (Montoux) reaction fall?

<p>Type IV (A)</p> Signup and view all the answers

What antigen is used in the tuberculin (Montoux) reaction?

<p>Old tuberculin (B)</p> Signup and view all the answers

At what time point does the tuberculin (Montoux) reaction reach its peak according to the text?

<p>48 hours (D)</p> Signup and view all the answers

Study Notes

Hypersensitivity Reactions

  • There are four types of hypersensitivity reactions: type I, type II, type III, and type IV, distinguished by their mechanisms and time frames.
  • Exposure to allergens can occur through ingestion, inhalation, injection, or direct contact.

Classification of Hypersensitivity Reactions

  • Type I, type II, type III, and type IV hypersensitivities have distinct mechanisms and time frames.

Type IV Hypersensitivity

  • A classical example is the tuberculin (Montoux) reaction, which peaks 48 hours after antigen injection (old tuberculin).

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Description

Test your knowledge on the different types of hypersensitivities, with a focus on type I and its distinctions from type II, type III, and type IV. Learn about various ways of allergen exposure such as ingestion, inhalation, injection, or direct contact.

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