Where does gaseous exchange occur in the human lungs?
Answer and explanation
Correct answer: D. Alveoli
- Step 1: Alveoli have thin walls and a rich blood supply for gaseous exchange. Answer: Alveoli. Why not the others: Bronchi: Bronchi only conduct air. Trachea: The trachea is an air passage. Bronchioles: Bronchioles carry air to the alveoli.
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