A small piece of food is accidentally aspirated into the right main bronchus. Why is this bronchus a common site for aspiration?
Correct answer: A. It is wider and more vertical
- A. It is wider and more vertical
- B. It is narrower and more horizontal
- C. It is longer and more curved
- D. It is closed during swallowing
Explanation
The right main bronchus is wider, shorter and more vertical than the left main bronchus, so aspirated material more often enters it. The airway is protected during swallowing mainly by coordinated closure of the laryngeal structures, not by closure of the bronchus.
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The respiratory system includes the air passages, lungs, pleura, alveoli and the mechanics of breathing. It explains pulmonary ventilation, gas exchange, oxygen and carbon dioxide transport, regulation of breathing, and the difference between external respiration in the lungs and internal respiration in body tissues.
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