Canadian Medical Guide > Chemicals and Drugs > Inorganic Chemicals > Elements > Metals, Alkali > Potassium Terms and Definitions

Potassium

Medical Definition:	An element that is in the alkali group of metals. It has an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells. Potassium ion is a strong electrolyte and it plays a significant role in the regulation of fluid volume and maintenance of the water-electrolyte balance.
Guide Notes:	an alkali metal; K-39; /physiol permitted; /metab: consider also POTASSIUM CHANNELS & SODIUM-POTASSIUM PUMP; /blood: note see relateds; POTASSIUM, DIETARY is also available
Also Called:	Potassium Ion Level
CAS Type 1 Name:	CAS Number:	7440-09-7

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