Final answer:
Severe constriction in the bronchial tubes is indicative of asthma, a condition that leads to decreased air entry in the lungs due to bronchospasms and excessive mucus production.
Step-by-step explanation:
When there is severe constriction in the bronchial tubes, the disorder is asthma. Asthma affects the respiratory system by causing inflammation and edema of the airways, leading to bronchospasms or the constriction of the bronchioles. This constriction inhibits air from entering the lungs, and together with excessive mucus secretion, it contributes to airway occlusion. The impairment in airflow leads to decreased air entry, difficulty in breathing, wheezing, chest tightness, and coughing which are all symptoms of an asthma attack.