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NEET Biology Breathing and Exchange of gases (Animal Respiration) Question Bank Self Evaluation Test - Breathing and Exchange of Gases

  • question_answer
    When you exhale, the diaphragm:

    A) Relaxes and arches

    B) Relaxes and flattens

    C) Contracts and arches

    D) Contracts and flattens

    Correct Answer: A

    Solution :

    [a] When you exhale, the diaphragm relaxes and arches. This decreases the size of the thoracic cavity, which increases the pressure within the thoracic cavity, forcing air out of the lungs.


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