RESPIRATORY SYSTEM
BRONCHIOLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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smooth muscles in trachea/bronchi/bronchioles relax
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smooth muscles in trachea/bronchi/bronchioles contract
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ciliated cells produce too many mucus
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goblet cells are swollen to sweep away excessive mucus
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Detailed explanation-1: -During an asthma attack the muscle wall contracts and the lining of the airways becomes swollen and inflamed. These changes cause a narrowing of the airways which is further aggravated by an increase in secretions from the mucus membrane, which may actually block the smaller airways.
Detailed explanation-2: -During an asthma attack smooth muscles located in the bronchioles of the lung constrict and decrease the flow of air in the airways. The amount of air flow can further be decreased by inflammation or excess mucus secretion.
Detailed explanation-3: -Inflammation. If you have asthma, the lining of your airways is inflamed (swollen). This inflammation makes the air passages particularly sensitive to irritants and asthma triggers. Inflammation can also narrow the air passages and make it difficult for air to pass through the airways.
Detailed explanation-4: -We conclude that in asthmatics, IHV with dry cold air causes both tracheal and bronchial constriction, and that recovery seems to occur first in the central airways.