Biology · Human Physiology
A traveler experiencing a high-altitude headache finds relief as they begin to descend. This recovery is primarily due to:
- 1The gradual metabolic breakdown of native pain-relief hormones
- 2A psychological response to leaving the peak
- 3Increasing atmospheric pressure and oxygen partial pressure at lower altitudes✓
- 4Sudden local changes in ambient temperature and humidity
Correct answer
Increasing atmospheric pressure and oxygen partial pressure at lower altitudes
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