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NEET AIPMT SOLVED PAPER SCREENING 2011

  • question_answer
    The figure given below shows a small part of human lung where exchange of gas takes place. In which one of the options given below, the one part A, B C or D is correctly identified along with its function.                        

    A) A - Alveolar cavity  - main site of exchange of respiratory gases

    B) D - Capillary wall - exchange of and takes place here

    C) B - Red blood cell - transport of mainly

    D) - Arterial capillary - passes oxygen to tissues

    Correct Answer: A

    Solution :

    Alveoli are the primary sites of exchange of gases. The exchange of gases (\[{{O}_{2}}\] and \[C{{O}_{2}}\]) between the alveoli and the blood occurs by simple diffusion.


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