Ace the EMT Challenge 2025 – Elevate Your Emergency Skills!

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What is the primary feature of asthma?

Nonproductive cough

Swelling of the alveolar walls

Swelling of the bronchioles

The primary feature of asthma is the swelling of the bronchioles. In asthma, the airways become inflamed and constricted, leading to difficulty in breathing. This inflammation and narrowing of the bronchioles significantly impacts airflow, causing the characteristic symptoms of wheezing, shortness of breath, and tightness in the chest.

While other choices mention symptoms or features associated with respiratory conditions, they don’t capture the essence of asthma as effectively. For instance, a nonproductive cough can occur in various conditions but isn't specific to asthma. Similarly, although swelling of alveolar walls and the production of mucus can occur in different respiratory diseases, they do not directly pinpoint the pathological changes found in asthma. The hallmark of asthma is, therefore, the inflammation and swelling of the bronchioles, making it difficult for air to move in and out of the lungs.

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Production of mucus in the bronchioles

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