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.
Pemba Dorje Sherpa, who holds the record for the fastest Everest ascent, said: âTwo hundred people is too many for one weekend. Twenty-five to 30 a day is OK. âYou have many people waiting and waiting. They spend too long waiting at the top and they get frostbite. âWaiting around on Everest is dangerous. Running out of oxygen can be a big problem.â. Critics also point the finger at the increasing number of commercial expeditions. Clients pay about Â£17,000 to organisers, plus between Â£6,500 and Â£17,000 for an Everest permit.