Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Potassium is a chemical element that is crucial for the proper functioning of cells, tissues, and organs in the body. It helps maintain fluid balance, nerve transmission, and muscle contractions.
Related terms
Hypokalemia: A condition characterized by low levels of potassium in the blood which can affect heart rhythm.
Potassium Channels: Protein structures on cell membranes that allow passage of potassium ions into or out of cells; important for nerve signal transmission.
Electrolyte Balance: The balance between different electrolytes (like sodium, potassium) in our bodies; crucial for maintaining homeostasis.