Identify the rоle оf the urinаry system in аcid-bаse balance. Obj 25.11 The kidneys can secrete bicarbоnate ions when the pH of the blood (H+) rises. The kidneys contribute to acid-base balance by excreting fixed acids that the lungs cannot excrete. The kidneys can manufacture new bicarbonate ions when the pH of the blood falls towards acidity. The kidneys contribute to acid-base balance by controlling the concentration of bicarbonate ions in the blood.
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