Question

bronchioles end in a number of air sacs called......................​

Answer 1

Answer:

alveoli

Bronchioles end in tiny air sacs called alveoli, where the exchange of oxygen and carbon dioxide actually takes place. Each person has hundreds of millions of alveoli in their lungs. This network of alveoli, bronchioles, and bronchi is known as the bronchial tree.

Answer 2

Answer:

Alveoli.

Explanation:

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