钾离子 (Ｋ+ )对于维持机体内稳态和细胞正常功能非常重要。机体通过调节Ｋ+ 总量 (约 360 0ｍｍｏｌ)和Ｋ+ 在细胞内外的分布状况 (约 35 0 0∶10 0ｍｏｌ) ,使体液中的Ｋ+ 维持在恒定水平。人体每日摄入和排出的Ｋ+ 总量基本上是平衡的 ,都为 10 0～12 0ｍｍｏｌ左右。肾脏是 Potassium (K +) is important for maintaining homeostasis and normal cell function. Body through the regulation of K + total (about 360 0mmol) and K + in the cell distribution (about 35 0 0:10 0mol), so that the body fluid K + maintained at a constant level. K + daily intake and discharge of the human body is basically a balanced total, are about 10 0 ~ 120 mmol. Kidney is