Podcast
Questions and Answers
What is the most severe type of hypersensitivity reaction?
What is the most severe type of hypersensitivity reaction?
- Type II
- Type IV
- Type I (correct)
- Type III
Which effector cells are involved in Type I hypersensitivity reactions?
Which effector cells are involved in Type I hypersensitivity reactions?
- Natural killer cells
- T lymphocytes
- Tissue mast cells and circulating basophils (correct)
- Neutrophils and macrophages
In Type II hypersensitivity, the reactions involve antibodies directed to antigens on the surface of specific cells or tissues, resulting in what process?
In Type II hypersensitivity, the reactions involve antibodies directed to antigens on the surface of specific cells or tissues, resulting in what process?
- Inflammation
- Cytolysis (correct)
- Phagocytosis
- Tissue fibrosis
Which of the following is NOT a mediator involved in Type I hypersensitivity reactions?
Which of the following is NOT a mediator involved in Type I hypersensitivity reactions?
Which condition is associated with recurrent pyogenic infections and urticaria?
Which condition is associated with recurrent pyogenic infections and urticaria?
What is the time frame for manifesting signs and symptoms in Type II hypersensitivity reactions?
What is the time frame for manifesting signs and symptoms in Type II hypersensitivity reactions?
Which hypersensitivity reaction is characterized by the induction of cross-linking of IgE bound to mast cells?
Which hypersensitivity reaction is characterized by the induction of cross-linking of IgE bound to mast cells?
Which hypersensitivity reaction type involves cell-mediated antibody-dependent lysis by IgG and IgM?
Which hypersensitivity reaction type involves cell-mediated antibody-dependent lysis by IgG and IgM?
What type of hypersensitivity reaction is associated with blood transfusion reactions and autoimmune hemolytic anemia?
What type of hypersensitivity reaction is associated with blood transfusion reactions and autoimmune hemolytic anemia?
Which of the following clinical states is NOT associated with anaphylaxis?
Which of the following clinical states is NOT associated with anaphylaxis?
Which condition has an onset of signs and symptoms within 2-8 hours after exposure?
Which condition has an onset of signs and symptoms within 2-8 hours after exposure?
Which hypersensitivity reaction involves the deposition of immune complexes at various sites?
Which hypersensitivity reaction involves the deposition of immune complexes at various sites?
What is the main mechanism behind the Arthus reaction?
What is the main mechanism behind the Arthus reaction?
Which type of hypersensitivity reaction involves soluble antigens?
Which type of hypersensitivity reaction involves soluble antigens?
In which associated disease does pre-sensitized lymphocytes lead to an inflammatory reaction a couple of days after contact with the offending plant material?
In which associated disease does pre-sensitized lymphocytes lead to an inflammatory reaction a couple of days after contact with the offending plant material?
Which disease is NOT associated with Type IV hypersensitivity reactions?
Which disease is NOT associated with Type IV hypersensitivity reactions?
What mechanism characterizes Type II hypersensitivity reactions leading to cell destruction?
What mechanism characterizes Type II hypersensitivity reactions leading to cell destruction?
Which disease involves complement lysis as a mechanism of destruction?
Which disease involves complement lysis as a mechanism of destruction?
