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Predominant electrolytes in intracellular fluid are K+,
Mg+2, |
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| Ca+2,
H+, PO4-3, SO4-2,
HCO3-. |
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Predominant extracellular electrolytes are Na+, Cl-
H+. Ca+2 |
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| and
HCO3- also important extracellularly in certain
locations. |
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| Regulation
of pH: |
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| H+ are acid ions and lower pH |
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| HCO3- help to
neutralize acid and maintain pH. |
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| Bicarbonate buffer maintains pH in the
blood and |
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| elsewhere. |
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| CO2 + H2O ßà H2CO3
ßà H+ + HCO3- |
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