How do humans acclimatise at high altitudes where atmospheric pressure is low for normal breathing?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. By increasing red blood cell production, decreasing the binding affinity of haemoglobin and by increasing breathing rate.
- Acclimatisation to high altitude and low PO2 causes an increase in red blood cells, which can assist in compensating for hemoglobin desaturation. The concentration of hemoglobin increases with increasing altitude and increased red blood cells.