Q: Which chronic respiratory disorder is commonly caused by smoking?  

Answer: B

Emphysema is a chronic respiratory disorder that is commonly caused by smoking. In this condition, the air sacs (alveoli) in the lungs are damaged, which leads to shortness of breath, wheezing, and coughing. Smoking causes inflammation in the lungs, which leads to the destruction of the elastic fibers that help the lungs to expand and contract. As a result, the lungs lose their elasticity, making it difficult to breathe. Asthma is also a respiratory disorder, but it is not necessarily caused by smoking. Respiratory alkalosis and respiratory acidosis are not chronic respiratory disorders, but rather they are conditions that can occur as a result of an imbalance in the body's pH levels. Therefore, option B is the correct answer.

Click me to Read more Question & Answer of Respiratory system

---

Share this MCQ