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    Question

    Which part of the respiratory system is the site of gas

    exchange?
    A Trachea Correct Answer Incorrect Answer
    B Alveoli Correct Answer Incorrect Answer
    C Larynx Correct Answer Incorrect Answer
    D Bronchi Correct Answer Incorrect Answer

    Solution

    Alveoli are tiny air sacs in the lungs where oxygen enters the blood and carbon dioxide is removed. They are surrounded by capillaries and provide a large surface area for efficient gas exchange.

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