Vovenko E P, Sokolova I B
Pavlov Institute of Physiology of the Russian Acad. Sci., St. Petersburg, Russia.
Ross Fiziol Zh Im I M Sechenova. 1998 May-Jun;84(5-6):527-35.
Hypoxic exposure of Wistar rats resulted in sharp fall of the blood oxygen saturation on 1st-5th branching order arterioles. The increased oxygen extraction at hypoxia is due to an intensive diffusion of the oxygen through the walls of the arterioles and a lowered blood flow in the brain microvessels. Permeability of the arterioles' walls for oxygen plays a negative role as it lowers the oxygen tension in the blood entering the capillaries.
对Wistar大鼠进行低氧暴露导致第1 - 5级分支小动脉的血氧饱和度急剧下降。低氧时氧摄取增加是由于氧通过小动脉壁的强烈扩散以及脑微血管中血流减少所致。小动脉壁对氧的通透性起负面作用，因为它降低了进入毛细血管的血液中的氧张力。
