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 D
Explanation
A) Incorrect. A spacer does not increase the force of the medication but rather optimizes the delivery.
B) Incorrect. The purpose of a spacer is not related to portability; it's about enhancing the effectiveness of the inhaler.
C) Incorrect. Using a spacer does not allow for larger doses; it improves the distribution of the prescribed dose.
D) Correct. A spacer device helps ensure that more of the medication reaches the lungs by slowing down and dispersing the spray from the inhaler, making it easier to inhale effectively.
Correct Answer is C
Explanation
A) Incorrect. Asthma leads to airway narrowing, not widening.
B) Incorrect. While chronic inflammation can lead to airway remodeling over time, it does not make the airway walls more rigid in the acute phase.
C) Correct. Asthma is characterized by inflammation and narrowing of the airways, which can lead to symptoms like wheezing and difficulty breathing.
D) Incorrect. Asthma does affect the structure of the airways, primarily through inflammation and airway remodeling in the long term.
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