Renal compensation

Renal compensation is a mechanism by which the kidneys can regulate the plasma pH. It is slower than respiratory compensation, but has a greater ability to restore normal values.

In respiratory acidosis, the kidney produces and excretes ammonium (NH4+) and monophosphate, generating bicarbonate in the process while clearing acid.[1]

In respiratory alkalosis, less bicarbonate (HCO3−) is reabsorbed, thus lowering the pH.[1]

References
  1. Nosek, Thomas M. "Section 7/7ch12/7ch12p45". Essentials of Human Physiology. Archived from the original on 2016-03-24.
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