NEET Biology question
When a lowlander moves to a high altitude, consider the following statements about the resulting physiological adaptation. I. The low atmospheric pO at high altitude stimulates an increase in RBC production. II. The low atmospheric pO at high altitude decreases the rate of breathing. III. The low atmospheric pO at high altitude increases the rate of breathing. IV. The adaptation to high altitude involves a decrease in the RBC count. Which of the above statements are correct?
Solution
At high altitude, the fall in atmospheric pressure lowers the partial pressure of oxygen (pO), which stimulates erythropoietin release and so increases, not decreases, RBC production (I correct, IV incorrect),
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