DMPQ- What are the various high altitude adaptations in Humans?

High-altitude adaptation in humans is an instance of evolutionary modification in certain human populations, including those of Tibet in Asia, the Andes of the Americas, and Ethiopia in Africa, who have acquired the ability to survive at extremely high altitudes.

People living in high altitude can  inhale more air with each breath and breathe more rapidly than either sea level populations or Andeans. Tibetans have better oxygenation at birth, enlarged lung volumes throughout life, and a higher capacity for exercise. They show a sustained increase in cerebral blood flow, and less susceptibility to chronic mountain sickness than other populations, due to their longer history of high-altitude habitation

They can expands their blood vessels, allowing them to deliver oxygen throughout their bodies more effectively than sea-level people do.  For example Tibetans’ lungs synthesize larger amounts of a gas called nitric oxide from the air they breathe. One effect of nitric oxide is to increase the diameter of blood vessels, which suggests that Tibetans may offset low oxygen content in their blood with increased blood flow.

RAS-RTS FREE Notes brings Prelims and Mains programs for RAS-RTS FREE Prelims and RAS-RTS FREE Mains Exam preparation. Various Programs initiated by RAS-RTS FREE Notes are as follows:- For any doubt, Just leave us a Chat or Fill us a querry––

Android App for RAS Prelims and Mains 

-Rajasthan GK (History, Geography, Economy and Polity)
-RAS Prelims Notes
-RAS Current Affairs
-Daily Mains Practice Questions (DMPQ)
-Daily Prelims Practice Questions (DPPQ)
-Mains Topic wise Notes for All RAS GS Papers

Install Now on

Never Miss any RAS Updates
Loading