Micro Hypersensitiviy Dr Sloma

9 Questions | By Chachelly | Updated: Mar 22, 2022 | Attempts: 437

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1.

. The principle difference between type II and type III hypersensitivity is:
- A.
  
  The class (isotype of antibody)
- B.
  
  Whether the antibody reacts with the antigen on the cell or reacts with antigen before it interacts with the cell
- C.
  
  The participation of complement
- D.
  
  The participation of T cells
2.

A child stung by a bee experiences respiratory distress within minutes and lapses into unconsciousness. This reaction is probably mediated by:
- A.
  
  IgE antibody
- B.
  
  IgG antibody
- C.
  
  Sensitized T cells
- D.
  
  Complement
- E.
  
  IgM antibody
3.

A patient with severe asthma gets no relief from antihistamines. The symptoms are MOST likely to be caused by:
- A.
  
  IL-2
- B.
  
  Leukotrienes
- C.
  
  Serotonin
- D.
  
  Bradykinin
4.

Hypersensitivity to penicillin and hypersensitivity to poison oak are both:
- A.
  
  Mediated by IgE antibody
- B.
  
  Mediated by IgG and IgM antibody
- C.
  
  Intiated by haptens
- D.
  
  Initiated by Th2 cells
5.

Your patient has been treated for endocarditis with Penicillin G for the past 2 weeks. She now has fever and maculopapular erythematous rash over her chest and abdomen. A urinalysis shows significant protein in the urine. If the fever, rash and proteinuria are immunologic in origin, which one of the following is MOST likely to be involved?
- A.
  
  IgG and complement
- B.
  
  IgE and histimine
- C.
  
  IL-2 and cytotoxic T cells
- D.
  
  Gamma interferon and macrophages
6.

A child disturbs a wasp nest, is stung repeatedly, and goes into shock within minutes, manifesting respiratory failure and vascular collapse. This is MOST likely due to;
- A.
  
  Systemic anaphylaxis
- B.
  
  Serum sickness
- C.
  
  An Arthus reaction
- D.
  
  Cytotoxic hypersensitivity (Some references refer to type II hypersensitivity as “cytotoxic hypersensitivity”)
7.

Reaction to poison ivy or poison oak is:
- A.
  
  An-IgG mediated response
- B.
  
  An IgE-mediated response
- C.
  
  A cell-mediated response
- D.
  
  An Arthus reaction
8.

A delayed hypersensitivity reaction is characterized by:
- A.
  
  Edema without a cellular infiltrate
- B.
  
  An infiltrate composed of neutrophils
- C.
  
  An infiltrate composed of helper T cells and macrophages
- D.
  
  An infiltrate composed of eosinophils
9.

Regarding anaphylactic (type I) and immune complex (type III) hypersensitivities, which of the following is the MOST accurate?
- A.
  
  IgE is involved in both anaphylactic and immune complex hypersensitivities
- B.
  
  Complement is involved in both anaphylactic and immune complex hypersensitivities
- C.
  
  Less antigen is typically needed to trigger and anaphylactic reaction than an immune complex reaction
- D.
  
  Neutrophils play more important role in anaphylactic reactions than in immune complex reactions