1.

People who have migrated from the planes to an area adjoining Rohtang pass about six months backA. have more RBCs and their haemoglobin has a lower binding affinity to ` O_(2)`B. are not physcially fit to play games like footballC. suffer from altitude sickness with symptoms like nausea, fatigue, etc.D.

Answer» Correct Answer - A
As a person moves up a hill the ` pO_(2)` and total atmospheric pressure decreases. Decrease in `pO_(2)` due to increasing altidue , stimulates the JG cells of kidney to secrete erythrpoetin hromone, increasing the number of RBCs (polycythemia) to compensate the supply of `O_(2)`. At higher atitude haemoglobin has lower binding affinity to `O_(2)` , because the primary factor responsible for binding is `pO_(2)` . which decreases at higher altitude.


Discussion

No Comment Found