Buy backpacks, exercise machines, athletic shoes, and more at Fogdog Sports. Description Sodium is an atom, or ion, that carries a single positive charge.
Sodium can occur as a salt in a crystalline solid.
These salts can be dissolved in water or in juices of various foods. This asymmetric distribution of sodium ions is essential for human life. It makes possible proper nerve conduction, the passage of various nutrients into cells, and the maintenance of blood pressure. The body continually regulates its handling of sodium. When dietary sodium is too high or low, the intestines and kidneys respond to adjust concentrations to normal.