Question

Trace the path of smoke as a person smokes a cigarette.

• A. Trachea, Bronchus, Bronchioles, Alveoli
• B. Oesophagus, Trachea, Bronchi, Alveoli
• C. Trachea, Oesophagus, Bronchi, Alveoli
• D. Oesophagus, Bronchus, Bronchioles, Alveoli

Answer 1

The correct option is A Trachea, Bronchus, Bronchioles, Alveoli

The respiratory system extends from the nose and upper airway to the alveolar surface of the lungs, where gas exchange occurs. Inhaled tobacco smoke moves from the mouth through the upper respiratory tract, trachea, bronchi, bronchioles in the lungs and ultimately reaching the alveoli. As the smoke moves more deeply into the respiratory tract, more soluble gases are adsorbed and particles are deposited in the airways and alveoli.