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Questions and Answers
What happens when allergens are inhaled for the first time?
What happens when allergens are inhaled for the first time?
- IgE antibodies are formed and fixed to mast cells in bronchial mucosa (correct)
- IgG antibodies are formed and fixed to mast cells in bronchial mucosa
- IgA antibodies are formed and fixed to mast cells in bronchial mucosa
- IgM antibodies are formed and fixed to mast cells in bronchial mucosa
What happens if these allergens are inhaled again?
What happens if these allergens are inhaled again?
- They will be neutralized by the mast cells
- They will lead to formation of IgG antibodies
- They will not bind to the fixed antibodies
- They will bind to the fixed antibodies leading to release of mediators from the mast cells (correct)
Which type of hypersensitivity reaction is initiated by the process described?
Which type of hypersensitivity reaction is initiated by the process described?
- Type IV hypersensitivity reaction
- Type I hypersensitivity reaction (correct)
- Type III hypersensitivity reaction
- Type II hypersensitivity reaction
Which cells cause inflammation and progression of asthma?
Which cells cause inflammation and progression of asthma?
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Which mediators may be responsible for asthma?
Which mediators may be responsible for asthma?
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What is the provocation dose of methacholine necessary to produce a 20% fall in FEV1 known as?
What is the provocation dose of methacholine necessary to produce a 20% fall in FEV1 known as?
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Which non-antigenic factor is a precipitating factor for asthma?
Which non-antigenic factor is a precipitating factor for asthma?
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"In extrinsic asthma, the condition is paroxysmal & the patient is free in-between". What characterizes intrinsic asthma?
"In extrinsic asthma, the condition is paroxysmal & the patient is free in-between". What characterizes intrinsic asthma?
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![L08: Allergies [MCQ Set 2]](https://images.unsplash.com/photo-1470938330186-da818256fa34?crop=entropy&cs=srgb&fm=jpg&ixid=M3w0MjA4MDF8MHwxfHNlYXJjaHwzfHxhbGxlcmdlbnMlMkMlMjBJZ0UlMjBhbnRpYm9kaWVzJTJDJTIwcG9sbGVuJTJDJTIwYWxsZXJneXxlbnwxfDB8fHwxNzM5MzUzMjc5fDA&ixlib=rb-4.0.3&q=85&w=300&fit=crop&h=200&q=75&fm=webp)
