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Questions and Answers
What is the mechanism of Type III hypersensitivity reaction?
What is the mechanism of Type III hypersensitivity reaction?
- Release of cytokines and activation of macrophages
- T-cell mediated reaction
- Immune complex deposition and activation of complement system (correct)
- Immediate hypersensitivity reaction
What is the primary defect in autoimmune diseases?
What is the primary defect in autoimmune diseases?
- Overactive immune response
- Failure of immune system to distinguish between 'self' and 'nonself' (correct)
- Deficiency of T-cells
- Imbalance of cytokine production
What is the primary cause of immunodeficiency in HIV infection?
What is the primary cause of immunodeficiency in HIV infection?
- Deficiency of cytokine production
- Infection of macrophages
- Defect in antigen presentation
- Infection of T helper cells (correct)
What is the characteristic feature of Delayed Hypersensitivity Reaction?
What is the characteristic feature of Delayed Hypersensitivity Reaction?
What is the characteristic of Type IV hypersensitivity reaction?
What is the characteristic of Type IV hypersensitivity reaction?
What is the route of transmission of HIV virus?
What is the route of transmission of HIV virus?
What type of hypersensitivity reaction is mediated by immune complexes?
What type of hypersensitivity reaction is mediated by immune complexes?
Which type of hypersensitivity reaction is characterized by a delayed onset and is mediated by T cells?
Which type of hypersensitivity reaction is characterized by a delayed onset and is mediated by T cells?
What is the primary mechanism of Type II hypersensitivity reactions?
What is the primary mechanism of Type II hypersensitivity reactions?
What is the primary mechanism of Type I hypersensitivity reactions?
What is the primary mechanism of Type I hypersensitivity reactions?
Which type of hypersensitivity reaction is most commonly associated with autoimmune diseases?
Which type of hypersensitivity reaction is most commonly associated with autoimmune diseases?
What is the primary difference between immediate and delayed hypersensitivity reactions?
What is the primary difference between immediate and delayed hypersensitivity reactions?
What is the result of the deposition of antigen-antibody complexes on tissues in Type III reactions?
What is the result of the deposition of antigen-antibody complexes on tissues in Type III reactions?
What is the mechanism of muscle weakness in myasthenia gravis?
What is the mechanism of muscle weakness in myasthenia gravis?
What is the effect of histamine release from mast cells?
What is the effect of histamine release from mast cells?
What type of reaction is characterized by the binding of antibodies to cell surface antigens on specific cells and tissues?
What type of reaction is characterized by the binding of antibodies to cell surface antigens on specific cells and tissues?
What is the term for the increased migration of eosinophils and neutrophils at the site of local injury?
What is the term for the increased migration of eosinophils and neutrophils at the site of local injury?
What is the result of incompatible or mismatched blood transfusion?
What is the result of incompatible or mismatched blood transfusion?
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