People who have migrated from planes to area adjoining rohtag about six months back.
1. have usual RBC count and their haemoglobin has very high binding affinity to oxygen
2. have more RBC count and their haemoglobin has low binding affinity to oxygen
3. are not physically fit to play games like football
4. suffer from altitude sickness with symptoms like nausea and fatigue.
Eliminate the given options with justification.
Answers
Answer:
A.Have more RBCs and their haemoglobin has a lower binding affinity to O
2
When a person is on a high altitude, he has to acclimatize to it.
Breathing becomes difficult at high altitudes, because of the low density of the air. There is not sufficient oxygen in the atmosphere to oxygenate the blood adequately.
The oxygenation of blood depends upon the partial pressure of oxygen in the atmosphere. As atmospheric pressure decreases, so do the partial pressure of the oxygen.
For short durations, humans compensate for high altitudes by increasing the respiratory rate (hyperventilation). During a longer period of acclimatization, physiological changes occur.
The number of red blood cells in the blood increases (polycythemia). Other changes in the body's acid-base balance can also happen.
Answer:
4) suffer from altitude sickness with symptoms like nausea and fatigue .
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