Multiple choice

Initially where does the gas exchange happen in the bronchial tree?

  1. Terminal bronchioles

  2. Alveolar ducts

  3. Segmental bronchi

  4. Respiratory bronchioles

  5. Alveoli

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the lungs, bronchus opens into bronchi and then respiratory bronchioles. Here, the initial gaseous exchange occurs.