Regulation of extracellular K⁺ is not critical to body function because only about 2% of the total-body K⁺ is in the extracellular fluid.

Question

Quizplus · Accepted Answer

Regulation of extracellular K⁺ is actually critical to body function because even though only about 2% of total-body K⁺ is in the extracellular fluid, small changes in extracellular K⁺ concentrations can have significant effects on cellular excitability and ultimately on important physiological processes such as muscle contraction and nerve activity.

Regulation of Extracellular K⁺ Is Not Critical to Body Function