ANATOMY

Detailed explanation-1: -Potassium is the most abundant intracellular cation, but only about 2% of total body potassium is extracellular. Because most intracellular potassium is contained within muscle cells, total body potassium is roughly proportional to lean body mass. An average 70-kg adult has about 3500 mEq (3500 mmol) of potassium.

Detailed explanation-2: -Background. Potassium (K+) is the major intracellular cation, with 98% of the total pool being located in the cells at a concentration of 140-150 mmol/l, and only 2% in the extracellular fluid, where it ranges between 3.5 and 5 mmol/l.

Detailed explanation-3: -Most potassium in our body is found in muscle and lean tissue cells.

Detailed explanation-4: -Potassium, a metallic inorganic ion with atomic weight of 39, is the most abundant cation in the body. The vast majority of potassium is in the intracellular compartment with a small amount in the extracellular space. Normal serum potassium is 3.5 to 5.5 mEq/L; however, plasma potassium is 0.5 mEq/L lower.

Detailed explanation-5: -Roughly 98% of the potassium in your body is found in your cells. Of this, 80% is found in your muscle cells, while the other 20% can be found in your bones, liver and red blood cells ( 6 ).