Final answer:
Asthma and bronchitis are two common conditions of the upper respiratory system. Asthma is characterized by chronic inflammation and narrowing of the airways, while bronchitis is inflammation of the bronchial tubes.
Step-by-step explanation:
One common condition of the upper respiratory system is asthma, which is characterized by chronic inflammation and narrowing of the airways. This condition can result in wheezing, shortness of breath, and coughing. Another common condition is bronchitis, which is inflammation of the bronchial tubes. It can be caused by viral or bacterial infections, and symptoms include coughing, mucus production, and chest discomfort.
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