26.5 Renal Regulation

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Last updated 5:45 PM on 3/27/25
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6 Terms

1
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Lungs eliminate ——

volatile carbonic acid by eliminating CO2


2
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kidneys eliminate

  • nonvolatile (fixed) acids produced by cellular metabolism (phosphoric, uric, and lactic acids and ketones) to prevent metabolic acidosis

kidneys regulate alkaline substances; and renew them

3
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Kidneys regulate acid-base balance by adjusting amount of bicarbonate in blood by either:


  • Conserving (reabsorbing) or generating new HCO3–

  • Excreting HCO3–


4
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To maintain alkaline reserve


kidneys must replenish (reabsorb) bicarbonate


5
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When body is in alkalosis, type B intercalated cells can:


  • Secrete HCO3–

  • Reclaim H+ to acidify blood


6
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Even during alkalosis, nephrons and collecting ducts conserve more


HCO3– than they excrete