The sites of respiration inside the lung are ……….. .

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the specific sites within the lungs where respiration occurs.

2. **Identifying the Organs Involved**: The lungs are the primary organs involved in the respiratory process. They are responsible for the exchange of gases.

3. **Recognizing the Key Structures**: Within the lungs, there are several structures, but the most critical ones for gas exchange are the bronchioles and alveoli.

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