Food and Lungs
How does the kinds of food you eat effect the composition
of gasses in the lung? That is, how would different foods alter the
partial pressures of O2, N2, and CO2?
The food you eat has nothing to do with the partial pressures of gasses in
your lungs. Nitrogen gas doesn't dissolve in your blood at atmospheric
pressure. Your body maintains strict homeostasis (whenever possible). If
you were to eat food that would give you extra carbon for example, your body
doesn't put that extra into your blood to be taken to the lungs, it is
converted into other products for storage, ie. fat or raw materials for amino
acids that will be converted to protein. Any extra hydrogen is taken out by
the kidneys-this is why urine is usually slightly acidic.
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Update: June 2012