Respiratory adaptations · Physiology

The initial cause of respiratory alkalosis at high altitude is:

  1. Renal bicarbonate loss
  2. Hypoventilation
  3. Hyperventilation
  4. Increased lactic acid production
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Correct answer: Hyperventilation

Hyperventilation reduces arterial carbon dioxide levels. This leads to respiratory alkalosis early in high-altitude exposure.

Difficulty: Medium Question 5 of 20

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