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2 Cards in this Set
- Front
- Back
kidneys regulate HCO3- via __ and __
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H+ excretion; HCO3- reabsorption
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describe the mechanism of bicarbonate reabsorption
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1. HCO3- in tubular fluid combines with H+ to form CO2
2. CO2 diffuses into PCT epithelial cells which contain carbonic anhydrase 3. CO2 is converted to H+ + HCO3- 4. HCO3- is transported to ECF, H+ pumped out to lumen of tubule |