RT Book, Section A1 Freeman, Brian S. A1 Berger, Jeffrey S. SR Print(0) ID 1204770272 T1 Distribution of Water and Electrolytes T2 Anesthesiology Core Review: Part One: BASIC Exam, 2nd Edition YR 2024 FD 2024 PB McGraw-Hill Education PP New York, NY SN 9781264285518 LK accessanesthesiology.mhmedical.com/content.aspx?aid=1204770272 RD 2024/10/08 AB Fluid in the body is distributed between intracellular and extracellular compartments. Total body water (TBW) is the sum of the intracellular and extracellular compartments. In a 70-kg adult male, it comprises 60% of body weight or about 42 L. This value can vary with age, gender, and with the amount of adipose tissue versus lean muscle present in the body, as the latter has higher water content.