What is the primary mechanism by which the kidneys regulate acid-base balance?

Practice Questions

Q1
What is the primary mechanism by which the kidneys regulate acid-base balance?
  1. Excretion of bicarbonate
  2. Reabsorption of hydrogen ions
  3. Excretion of hydrogen ions
  4. Reabsorption of carbon dioxide

Questions & Step-by-Step Solutions

What is the primary mechanism by which the kidneys regulate acid-base balance?
  • Step 1: Understand that the body needs to maintain a balance between acids and bases to function properly.
  • Step 2: Know that the kidneys are organs that help control this balance.
  • Step 3: Learn that the kidneys can remove excess hydrogen ions (which are acidic) from the blood.
  • Step 4: Recognize that the kidneys also reabsorb bicarbonate (which is basic) back into the blood.
  • Step 5: Realize that by excreting hydrogen ions and reabsorbing bicarbonate, the kidneys help keep the blood's pH level stable.
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