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which one of the following has the small...

which one of the following has the smallest diameter

A

Right primary bronchus

B

Left primary bronchus

C

Trachea

D

Respiratory bronchiole

Text Solution

Verified by Experts

The correct Answer is:
D
Trachea divide into primary bronchi which divide further into smaller secondary bronchi then to tertiary bronchi. Tertiary bronchi branch repeatedly into terminal bronchiole and then to respiratory bronchiole.
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