Anatomy And Physiology II (APII) Exam 3 Practice Test

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What is the disadvantage of the right bronchus being larger in diameter and positioned at a steeper angle than the left bronchus?

It causes more airflow to the right lung It is less elastic It prevents secretions from migrating Most foreign objects that enter the trachea find their way into the right bronchus

Correct Answer:

Most foreign objects that enter the trachea find their way into the right bronchus

Explanation:

The key idea is that airway anatomy directs where aspirated material tends to go. The right main bronchus is wider and more vertical (it travels from the trachea at a steeper angle) than the left. Because of this alignment and size, objects entering the trachea are more likely to slip into the right bronchus and lodge there. That predisposition—foreign bodies or secretions entering and getting stuck in the right side—is the disadvantage described. The left bronchus, being narrower and more horizontal, is less likely to receive aspirated material, so the issue described doesn’t apply there. Other statements don’t reflect this anatomical tendency toward the right side.

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