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The partial pressure of oxygen in the alveoli of the lungs is

  • Option 1)

    equal to that in the blood

  • Option 2)

    more than that in the blood

  • Option 3)

    less than that in the blood

  • Option 4)

    less than that of the carbon dioxide

 

Answers (1)

best_answer

 

Alveoli -

Alveoli are the primary sites of exchange of gases.

 

- wherein

Exchanged in these sites by simple diffusion mainly based on pressure/concentration gradient.

 

 Exchange of gases by simple diffusion based on pressure.


Option 1)

equal to that in the blood

This option is incorrect.

Option 2)

more than that in the blood

This option is correct.

Option 3)

less than that in the blood

This option is incorrect.

Option 4)

less than that of the carbon dioxide

This option is incorrect.

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divya.saini

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