已证明微重力和模拟失重时体液的头向分布可以引起水和电解质的负平衡,为了进一步探讨其机理,本实验观察了鼠在14天头低位25°倾斜期间血管、细胞外液及肾功能的变化。实验方法是将28只Wistar鼠分为2组。第一组8只,实验前进行膀胱及股动脉、静脉插管,以便记录平均 It has been demonstrated that head-to-head distribution of body fluids during microgravity and simulated weightlessness can cause a negative balance between water and electrolyte. To further investigate its mechanism, we observed the changes of blood vessels, extracellular fluid and renal function The change. The experimental method is to divide 28 Wistar rats into two groups. The first group of 8, before the experiment bladder and femoral artery, vein catheterization, in order to record the average