Which features explain why aspirated small objects tend to enter the right primary bronchus?

Which features explain why aspirated small objects tend to enter the right primary bronchus?

• A. Narrower diameter, longer length, more horizontal
• B. Left main bronchus is shorter
• C. Equal diameter and orientation
• D. Wider diameter, shorter length, more vertical

Answer: (D)

When something is aspirated, it follows the path of least resistance from the trachea into the main bronchi. The right main bronchus is wider, shorter, and more vertical than the left, making it a more direct continuation of the trachea. The left bronchus, by contrast, is narrower, longer, and more horizontal, so it’s less likely to receive an aspirated object. This anatomy explains why aspirated small objects tend to enter the right primary bronchus.

When something is aspirated, it follows the path of least resistance from the trachea into the main bronchi. The right main bronchus is wider, shorter, and more vertical than the left, making it a more direct continuation of the trachea. The left bronchus, by contrast, is narrower, longer, and more horizontal, so it’s less likely to receive an aspirated object. This anatomy explains why aspirated small objects tend to enter the right primary bronchus.