Extracellular fluid
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Extracellular fluid (ECF) usually denotes all body fluid outside of cells. The remainder is called intracellular fluid.
In some animals, including mammals, the extracellular fluid can be divided into two major subcompartments, interstitial fluid and blood plasma. The extracellular fluid also includes the transcellular fluid; making up only about 2.5 percent of the ECF.
In humans, the normal glucose concentration of extracellular fluid that is regulated by homeostasis is approximately 5 mM.
The pH of extracellular fluid is tightly regulated by buffers around 7.4.
The volume of ECF is typically 15L (of which 12L is interstitial fluid and 3L as plasma)
Contents of ECF
Main Cations: Sodium (140 mM) Potassium (4 mM) Calcium (2 mM)
Main Anions: Chloride (110 mM) Hydrogen Carbonate (26 mM)
It is poorer in proteins compared to intracellular fluid
External links
- f_10/12369270 at Dorland's Medical Dictionary
- extracellular+fluid at eMedicine Dictionary
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

