A nurse is explaining the pathophysiology of asthma to a client. What role do mast cells play in the pathophysiology of asthma?
"Mast cells release hormones that relax the airway muscles in asthma."
"Mast cells trigger inflammation and bronchoconstriction in response to allergens."
"Mast cells help to clear excess mucus from the airways in asthma."
"Mast cells produce antibodies that protect against asthma attacks."
The Correct Answer is B
A) Incorrect. Mast cells do not release hormones that relax airway muscles; they are involved in inflammation.
B) Correct. Mast cells release inflammatory substances in response to allergens, leading to bronchoconstriction and inflammation in asthma.
C) Incorrect. Mast cells are not primarily involved in clearing excess mucus from the airways.
D) Incorrect. Mast cells do not produce antibodies to protect against asthma attacks.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Incorrect. Bacterial infections are not the primary cause of asthma; it is more related to inflammation and airway hyperreactivity.
B) Incorrect. Genetics can indeed play a role in the development of asthma.
C) Correct. Environmental factors, including allergens and irritants, are significant contributors to asthma development and exacerbation.
D) Incorrect. While emotional stress and anxiety can exacerbate asthma symptoms, they are not the sole triggers of the condition.
Correct Answer is B
Explanation
A) Incorrect. Reducing airway inflammation is the primary function of inhaled corticosteroids, not bronchodilators.
B) Correct. Bronchodilators, such as beta-agonists, help relax the smooth muscles surrounding the airways, which can improve airflow and relieve bronchoconstriction in asthma.
C) Incorrect. Bronchodilators primarily provide quick relief during asthma attacks but do not prevent asthma symptoms over the long term.
D) Incorrect. Bronchodilators are not used to treat allergic reactions; they are used to relieve acute bronchoconstriction associated with asthma.
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