Type 1-4 hypersensitivity from chart Questions and Answers (100% Correct Answers) Already Graded A+

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Type 1-4 hypersensitivity from chart
Questions and Answers (100% Correct
Answers) Already Graded A+
Type 1
Ans: mediated by IgE


Type 2
Ans: mediated by IgM or IgG
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Type 3
Ans: mediated by IgG
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Type 4
Ans: mediated by T lymphocytes


Type 1, 4
Ans: compliment activation: NO


Type 2, 3
Ans: compliment activation: YES


Type 1
Ans: immune response: Ag plus IgE, leading to mast cell degranulation


Type 2
Ans: immune response: Surface Ag and Ab, leading to killer cell cytotoxic
action or complement-mediated lysis


Type 3
Ans: immune response: Ag-Ab complex in tissue; complement activated
and PMNs attracted


Type 4
Ans: Ag-sensitized T cells release lymphocytes leading to inflammatory
reactions, and attract macrophages, which release mediator

, 2



Type 1, 2
Ans: peak action: 15-30 min


Type 3
Ans: peak action: 6 hours


Type 4
Ans: peak action 24-48 hrs


Type 4
Ans: all types of hypersensitivity have serum transferability except for
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Type 1
Ans: cell transferability: familial
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Type 2
Ans: cell transferability: HLA linked in some cases


Type 3
Ans: cell transferability: familial (autoimmune)


Type 4
Ans: cell transferability: unknown


Type 1
Ans: Genetic mechanism: High IgE level


Type 1
Ans: Genetic mechanism: HLA linked ir genes


Type 1
Ans: Genetic mechanism: general hyper-responsivenes


Type 3
Ans: Genetic mechanisms: HLA specifities


Type 1
Ans: reaction caused by t-cell deficiency