Of the Following Structures, the Largest in Diameter is the ________

Question

Of the following structures, the largest in diameter is the ________.
A) primary bronchus
B) secondary bronchus
C) respiratory bronchiole
D) trachea
E) tertiary bronchus

Accepted Answer

The trachea, also known as the windpipe, is the largest in diameter among the options listed. It serves as the main airway to the lungs, making it larger than the bronchi and bronchioles which branch off from it.