Mountain sickness is caused by:

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Question

(A) Mountain sickness occurs because as altitude increases,the atmospheric pressure decreases,which leads to a lower partial pressure of oxygen $(pO_2

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$O_2$ levels decrease progressively with the rise in altitude,so the fall in blood $O_2$ produces this symptom.

Vedclass · Answer

(A) Mountain sickness occurs because as altitude increases,the atmospheric pressure decreases,which leads to a lower partial pressure of oxygen $(pO_2)$.Due to the lower $pO_2$ at high altitudes,the body does not get enough oxygen,resulting in hypoxia (low oxygen in the blood).Symptoms include nausea,fatigue,and heart palpitations.Therefore,the primary cause is the decrease in oxygen availability at high altitudes.

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