Hypersensitivity Reactions and Immune System Quiz
25 Questions
6 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of hypersensitivity reaction is a cell-mediated response?

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

What is the main characteristic of IgE antibodies?

  • They are classified based on the Gell and Coombs system
  • They cause severe liver damage
  • They are formed in response to antigenic material
  • They attach to the surface of mast cells (correct)

What is the term used to describe the undesirable effect of the immune response damaging tissues?

  • Immunity
  • Hypersensitivity (correct)
  • Antigenic material
  • Hepatitis C infection

Which immunologists devised the Gell and Coombs system for classifying hypersensitivity reactions?

<p>Gell and Coombs (D)</p> Signup and view all the answers

What is the main cause of hypersensitivity reactions?

<p>Inappropriately directed immunity (C)</p> Signup and view all the answers

Which type of hypersensitivity reaction involves antibodies formed in response to antigenic material?

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

What is the term used to describe the severe liver damage in hepatitis C infection mediated by immune T cells?

<p>Bystander effect (D)</p> Signup and view all the answers

What is the main characteristic of Type I hypersensitivity reactions?

<p>They involve antibodies formed in response to antigenic material (C)</p> Signup and view all the answers

Which cells release preformed cytoplasmic granules filled with histamine, proteases, and cytokines in response to cross linking of IgE molecules by antigen binding?

<p>Mast cells (B)</p> Signup and view all the answers

What are the mediators released from mast cells and eosinophils that result in an acute asthma attack?

<p>All of the above (D)</p> Signup and view all the answers

What is the process called when an individual becomes allergic to specific antigens and develops localized IgE-mediated reactions?

<p>Atopic allergy (C)</p> Signup and view all the answers

Which type of immune response is protective against developing asthma?

<p>Th1 immune response (B)</p> Signup and view all the answers

What is the term used to describe a severe generalized IgE-mediated hypersensitivity reaction that may be life-threatening?

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

What triggers anaphylaxis in a susceptible person after initial sensitization?

<p>Exposure to an allergen (B)</p> Signup and view all the answers

What type of immune response is associated with the hygiene hypothesis, which suggests early exposure to environmental allergens may protect against asthma?

<p>Th1 immune response (C)</p> Signup and view all the answers

What is the method of treatment called that involves immunizing an allergic individual to the offending allergen by repeated subcutaneous injections of the antigen?

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

Which of the following is true about an anaphylactoid reaction?

<p>All of the above (D)</p> Signup and view all the answers

What is the treatment for an anaphylactic reaction?

<p>Epinephrine and other appropriate agents. (B)</p> Signup and view all the answers

What can trigger an anaphylactoid reaction?

<p>Aspirin. (B)</p> Signup and view all the answers

What is scombroid poisoning?

<p>A reaction caused by histamine in fish flesh. (A)</p> Signup and view all the answers

What happens when histamine is ingested in scombroid poisoning?

<p>It triggers an anaphylactoid reaction. (D)</p> Signup and view all the answers

What is the cause of an anaphylactoid reaction?

<p>Direct action on mast cells. (D)</p> Signup and view all the answers

Which of the following can trigger an anaphylactoid reaction?

<p>Antibiotics. (D)</p> Signup and view all the answers

What is the similarity between an anaphylactic reaction and an anaphylactoid reaction?

<p>Both can produce severe reactions. (D)</p> Signup and view all the answers

What is the difference between an anaphylactic reaction and an anaphylactoid reaction?

<p>The cause. (B)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser