hematopoiesis. (physiology). The process by which the cellular elements of the blood are formed.ematopoiesis. (physiology). The process by which the cellular elements of the blood are formed.
This is why Everest climbers typically make several trips up and down the mountain to increasingly high elevation camps to acclimate their bodies to high altitude conditions. Other risks to Everest climbers include frostbite and hypothermia from the extreme temperatures, thrombosis or embolisms caused by thickening of blood in response to high altitude, extreme sunburn, and broken bones from falls.
Watch: Reinhold Messner recounts what it was like to climb Mount Everest without supplemental oxygen and what inspires his passion for adventure. Oxygen remains one of the most controversial aspects of climbing Everest. About 95 percent of people who reach the summit of Everest resort to using it. Critics consider the need to use supplemental oxygen akin to blood doping or steroid use: Itâs nothing short of downright cheating.