Describe the physiological role, distribution and regulation of potassium ions (K+ ).
The best answers demonstrated an appreciation of the multiple roles of potassium in normal physiology and described the integrated regulation of potassium concentration/distribution as opposed to many answers that seemed to focus purely on the renal handling of a filtered potassium load.
Rastegar, Asghar. "Serum potassium." Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition (1990).
Palmer, Biff F. "Regulation of potassium homeostasis." Clinical Journal of the American Society of Nephrology 10.6 (2015): 1050-1060.
Gumz, Michelle L., Lawrence Rabinowitz, and Charles S. Wingo. "An integrated view of potassium homeostasis." New England Journal of Medicine 373.1 (2015): 60-72.
Greenlee, Megan, et al. "Narrative review: evolving concepts in potassium homeostasis and hypokalemia." Annals of internal medicine 150.9 (2009): 619-625.