This document discusses the importance of electrolyte balance in the body. It defines electrolytes as substances that become ions in solution and conduct electricity. Electrolytes are present in the human body and maintaining their balance is essential for normal cell and organ function. The concentration and distribution of electrolytes inside cells and in extracellular fluid is regulated by active transport pumps. The kidneys play an important role in regulating electrolyte concentration to maintain health. Body fluids also need to be maintained within narrow pH ranges for biological processes to function properly.