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    Hi,

    When the cells have respired and you have tissue fluid present, why does most of it enter the lymphatic system? Why doesn't it all diffuse back into the capillaries?

    Thanks
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    Most of the substances do in fact go back to the capillaries; only something like 10% enters the lymphatic system. At least that is what I think.

    What does everyone else think?
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    Most of it doesn't enter the lymphatic system. Only a small amount of net tissue loss does.

    Look at the hydrostatic and osmotic pressures acting on the tissues and lymphatics. Should make a bit more sense.

    (Original post by freetown)
    Most of the substances do in fact go back to the capillaries; only something like 10% enters the lymphatic system. At least that is what I think.

    What does everyone else think?
    More like 1% iirc.
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    The involvement of the lymphatic system in this role is exaggerated at A-level do to the exam boards wanting students to remember it is actually an important system (although in other roles, covered less in A-levels).
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    ah that'll be why, okay thank you
 
 
 
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