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    There is a greater percentage reduction in blood flow to the diaphragm than to the lungs during a dive.
    Explain the advantage to a diving seal of
    (i) blood continuing to flow to the lungs (1 mark)
    (ii) a large reduction in blood flow to the diaphragm (2 marks)
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    Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.


    Just quoting in Danny Dorito so she can move the thread if needed :wizard:
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    (Original post by imaan2121)
    There is a greater percentage reduction in blood flow to the diaphragm than to the lungs during a dive.
    Explain the advantage to a diving seal of
    (i) blood continuing to flow to the lungs (1 mark)
    (ii) a large reduction in blood flow to the diaphragm (2 marks)
    (i) you need blood to keep flowing to the lungs to keep a diffusion gradient for oxygen to keep moving into the blood.
    (ii) the diaphragm obviously isn't going to be contracting when the seal is underwater, so you don't need blood flowing to it, that blood needs to be going to other places (like the lungs, brain and skeletal muscles on the limbs) to keep the seal alive underwater.

    ez pz
 
 
 
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