Question
Explain how changes in altitude affect oxygen transport and respiratory efficiency in humans.
Answer :
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When humans ascend to higher altitudes, the partial pressure of oxygen in the atmosphere decreases, resulting in lower oxygen availability for the body. This condition, known as hypobaric hypoxia, triggers several physiological responses to maintain adequate oxygen transport to tissues. One immediate response is an increase in ventilation rate, as chemoreceptors in the carotid bodies and aortic arch detect reduced
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