MCQ IN MEDICINE

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: -Bronchi and Bronchial Tree In the mediastinum, at the level of the fifth thoracic vertebra, the trachea divides into the right and left primary bronchi. The bronchi branch into smaller and smaller passageways until they terminate in tiny air sacs called alveoli.

Detailed explanation-3: -The conducting portion end at the terminal bronchiole. The respiratory portion begins from the respiratory bronchiole and continues with the alveolar ducts, alveolar sacs, and finally ends at the alveoli where the significant exchange of gases takes place.