What is the correct order of the airflow pathway into the lungs?

What is the correct order of the airflow pathway into the lungs?

• A. Nose/Mouth, Larynx, Trachea, Bronchi, Alveoli.
• B. Nose/Mouth, Trachea, Bronchi (Lungs), Bronchioles, Alveoli.
• C. Nose/Mouth, Pharynx, Larynx, Trachea, Bronchi.
• D. Nose/Mouth, Trachea, Bronchi, Alveoli, Lungs.

Answer: (B)

Air moves from the outside world into the lungs through the nose or mouth, then down the airway through the trachea. The trachea splits into the bronchi that enter the lungs, then those bronchi branch into progressively smaller airways called bronchioles, and finally air reaches the alveoli, the tiny sacs where gas exchange occurs. This sequence shows the progression from large conducting airways to the sites of gas exchange, which is why it best fits the airflow path. Other options omit bronchioles and alveoli or place steps out of order, so they don’t reflect the full conduit from entry to gas exchange.

Air moves from the outside world into the lungs through the nose or mouth, then down the airway through the trachea. The trachea splits into the bronchi that enter the lungs, then those bronchi branch into progressively smaller airways called bronchioles, and finally air reaches the alveoli, the tiny sacs where gas exchange occurs. This sequence shows the progression from large conducting airways to the sites of gas exchange, which is why it best fits the airflow path. Other options omit bronchioles and alveoli or place steps out of order, so they don’t reflect the full conduit from entry to gas exchange.