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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) Correct. A CBC can detect elevated levels of white blood cells (eosinophils) associated with airway inflammation in asthma.
B) Incorrect. Serum cholesterol levels are not a primary diagnostic test for asthma.
C) Incorrect. Urinalysis is used to assess kidney function and detect abnormalities in the urine, not for asthma diagnosis.
D) Incorrect. ESR is a nonspecific test used to detect inflammation in the body but is not specific to asthma diagnosis.
Correct Answer is B
Explanation
A) Incorrect. Measuring oxygen levels in the blood is typically done using pulse oximetry or arterial blood gas tests, not a bronchial provocation test.
B) Correct. A bronchial provocation test evaluates how the airways respond to substances that can trigger bronchoconstriction, helping to diagnose asthma.
C) Incorrect. Visualizing airways using a special camera is usually done through bronchoscopy, not a bronchial provocation test.
D) Incorrect. Checking for specific antibodies related to asthma is not a primary diagnostic test for asthma; it is more commonly associated with allergies.
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