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Sodium Balance

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Abstract

The cation sodium is the predominant solute in the extracellular fluid (ECF). The concentration of sodium in the ECF is tenfold higher than inside all cells. The sodium cation together with its associated anions (“comp Anions”) are the main determinants of ECF osmolarity. This electrolyte profile explains why total body sodium (sodium balance) determines the volume of the body fluid compartment of ECF.

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Correspondence to Hwee Ming Cheng .

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© 2015 Springer International Publishing Switzerland

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Cheng, H. (2015). Sodium Balance. In: Physiology Question-Based Learning. Springer, Cham. https://doi.org/10.1007/978-3-319-12790-3_15

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