Body Fluid Compartments

  • Alluru S. ReddiEmail author


Water is the most abundant component of the body. It is essential for life in all human beings and animals. Water is the only solvent of the body in which electrolytes and other nonelectrolyte solutes are dissolved. An electrolyte is a substance that dissociates in water into charged particles called ions. Positively charged ions are called cations. Negatively charged ions are called anions. Glucose and urea do not dissociate in water because they have no electric charge. Therefore, these substances are called nonelectrolytes.


Body fluid compartments Electrolyte composition Water in the body Extracellular fluid Intracellular fluid Osmolarity versus osmolality 

Suggested Reading

  1. Fanestil DD. Compartmentation of body water. In: Narins RG, Editor. Clinical disorders of fluid and electrolyte metabolism. 5th edition. New York: McGraw-Hill; 1994. pp. 3–20.Google Scholar
  2. Yoshika T, Iitaka K, Ichikawa I Body fluid compartments. In: Ichikawa I, Editor. Pediatric textbook of fluids and electrolytes. Baltimore: Williams and Wilkins; 1990. pp. 14–20.Google Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Department of Medicine Division of Nephrology and HypertensionRutgers New Jersey Medical SchoolNewarkUSA

Personalised recommendations