The natural calendar of Tianfu 丨 Goose that can fly over Everest (July 3, 2022)

In 1953, a mountain climber had seen a spotted geese flying from the side of Mount Everest at the peak of Mount Everest at an altitude of 8848.86 meters. This height was nearly 2 kilometers higher than the maximum altitude of the animals known at the time. Why can they fly so high?

Scientists have found that the hemoglobin and oxygen binding of spots of the head of the head are strong. Compared with birds that cannot fly to such a height, there are more capillaries around the pectoral muscle cells of the head of the head. Many scientists have also studied birds resting and walking on treadmills under normal and low oxygen conditions, but they did not explain how this bird cope with the low oxygen level during flight.

Later, physiologists and astronauts designed a unique experiment: domesticated 19 spotted geese, from the hatching of the pornographic to the training they flew over 30 yards. In the meantime, researchers wearing physiological sensors and oxygen masks. The mask simulates the air conditions of low, medium and high altitude, and the sensor records the heart rate, blood oxygen level, body temperature, and metabolic rate of spotted goose.

In the wind tunnel experiment, the researchers found that adult spots have slowed down metabolism and heart rate under low oxygen conditions, and cooled blood in some way. Under cold conditions, the combination of hemoglobin and oxygen is closer, which means that the blood of birds carry more oxygen. Researchers said in the report that when the oxygen content in thin air drops to 7%, the metabolism of the head of the head of the head will also decrease. Battle geese also uses more effective flight strategies with biomechanics that changes wings.

These discoveries will lay the foundation for future high -altitude physiological research and may also be beneficial to human medicine, because heart disease attacks, stroke and organ transplantation will cause patients to be under low oxygen conditions.