NEET PG DENTAL EXAM

Detailed explanation-1: -In your lungs, the main airways, called bronchi, branch off into smaller and smaller passageways. The smallest airways, called bronchioles, lead to tiny air sacs called alveoli.

Detailed explanation-2: -Terminal Bronchioles. This is the last part of the conducting portion of the respiratory system, and has the smallest diameter of all (less than 1mm).

Detailed explanation-3: -In the lungs, the main-stem bronchi divide into smaller bronchi. The smaller bronchi divide into even smaller tubes (bronchioles). Bronchioles end in tiny air sacs (alveoli) where the exchange of oxygen and carbon dioxide occurs.