第二章水、电解质代谢紊乱 Disturbances of water and electrolyte balance) 第一节水、钠代谢及其调节机制 (Water and sodium meta bolism and their regulation) 、体液的容量和分布( Volume and distribution of body fluid 体液( body fluid):体内的水和溶解在其中的物质 水与电解质平衡( Water and electrolytes balance) 相对恒定: 令体液的容量( volume) 令化学成分( composition) 令渗透压( osmotic pressure) 令分布( distribution) Distribution of body fluid Percentage of body weight(%) Intracellular fluid(ICF) 40 Extracellular fluid (ECF) 20 Interstitial fluid(IsF) 15 Plasma 5 Total body water (TBW 60 Transcellular fluid 2%第二章 水、电解质代谢紊乱 (Disturbances of water and electrolyte balance) 第一节 水、钠代谢及其调节机制 (Water and sodium metabolism and their regulation) 一、体液的容量和分布 (Volume and distribution of body fluid) 体液 (body fluid)：体内的水和溶解在其中的物质 水与电解质平衡 (Water and electrolytes balance) 相对恒定： ❖ 体液的容量(volume) ❖ 化学成分(composition) ❖ 渗透压(osmotic pressure) ❖ 分布(distribution) Total body water (TBW) 60 20 15 5 Extracellular fluid (ECF) Interstitial fluid(ISF) Plasma Intracellular fluid (ICF) 40 Percentage of body weight (％) Distribution of body fluid Transcellular fluid 2%