Final answer:
Bronchial constriction can cause wheezing, a common symptom in both asthma and bronchitis, due to the narrowing and inflammation of the airways, leading to difficulty in breathing.
Step-by-step explanation:
The student's question pertains to the constriction of the bronchi, which often results in wheezing. In the context of chronic diseases like asthma and acute bronchitis, the bronchi and bronchioles can become inflamed and narrow, leading to bronchoconstriction. During an asthma attack or bronchitis, the smooth muscles around the bronchioles contract excessively, narrowing the airways and sometimes leading to obstruction from excess mucus. This obstruction can cause symptoms such as difficulty breathing, chest tightness, and wheezing, known collectively as bronchospasms. Asthma triggers include a wide range of environmental factors, such as allergens, temperature changes, or stress. Treatments for asthma involve avoiding these triggers and the use of medications to control inflammation and ease muscle contraction around the airways.