Question

Adjustment in high altitude includes ____________.

an increase in minute respiratory volume

hypersecretion of erythropoietin

dyspnea

an increase in hemoglobin saturation

A and D

Answer 1

In high altitude the atmospheric oxygen level is lower than the sea level.So due to this problem or body needs acclimatise in that situation.Some physiological changes occurs.

A. Due to low level of oxygen the level of carbon dioxide in the blood increases and it stimulates the chemoreceptors which in turn increases the rate of respiratiion as a result the minute respiratory volume increases.So this option is correct.

B. Hypersecretion erythropoietin causes high production of RBC which occurs in pathological condition like polycythemia.So this option is incorrect.

C. Dyspnea is a condition where shortness of brathing occurs when the body oxygen demand is not full filled,is a result due to high acclimatisation.So this option is incorrect.

D. The hemoglobin level rises or reaches the saturation level to carry more amount of oxygen and full fill the body oxygen demand.So this option is correct.

The option A & D are correct.