Acid-base balance · Physiology

Which organ is primarily responsible for long-term regulation of acid-base balance?

  1. Lungs
  2. Kidneys
  3. Liver
  4. Heart
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Correct answer: Kidneys

The kidneys regulate acid-base balance by excreting hydrogen ions and adjusting bicarbonate levels. This provides long-term control.

Difficulty: Medium Question 14 of 20

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