[Potassium homeostasis].
Potassium is a main cation in the intracellular compartment, with nearly 80% of stores being present in muscles, liver, bone and red blood cells. Intracellular potassium concentration is about 140-150 mmol/l in contrast to more than 30 times lower extracellular levels (3.5-5.0 mmol/l).This transmembrane gradient is crucial for maintenance of the membrane resting potential and neuro-muscularfunctioning, including the heart. In this review the physiological regulation of potassium balance is shortly reviewed to set a background for understanding its disorders.
Katedra i Klinika Nefrologii, Dializoterapii i Chorób Wewnetrznych, Warszawski Uniwersytet Medyczny. jrowinska@gmail.com
Joanna
J
Matuszkiewicz-Rowińska
Katedra i Klinika Nefrologii, Dializoterapii i Chorób Wewnetrznych, Warszawski Uniwersytet Medyczny.
Ewa
E
Wojtaszek
D004068:Digestive System Physiological Phenomena; D006706:Homeostasis / Q000502:physiology*; D006801:Humans; D007008:Hypokalemia / Q000378:metabolism; D042541:Intracellular Space / Q000378:metabolism*; D009399:Nephrons / Q000378:metabolism; D011188:Potassium / Q000378:metabolism*
D011188:Potassium