What Are Electrolytes?
Reviewed: Dr. Gromatzky
6. Potassium
As indicated elsewhere, potassium works together with sodium in a number of processes, especially in maintaining body fluid balance. Potassium is the main positive ion, or cation, within the cell. It is a major player in muscle function and transmission of nervous impulses. Its other functions include maintenance of a normal heartbeat.
The normal level of potassium in humans is 3.5 to 5.5 mEq/L. Good sources of potassium include banana, yoghurt, potato, sweet potato, and avocado.
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