← Chapter 26
Anatomy & Physiology · Chapter 26

Electrolytes

Electrolytes are charged ions dissolved in body fluids. They drive nerve signals, muscle contraction, and fluid balance — so their levels are tightly controlled. Tap each.

Sodium

Na⁺
Electrolytesthe charged ions

The major ions

📷 Reference image
A real labeled figure to compare with the interactive above.
Electrolytes reference figure
Electrolytes — OpenStax, CC BY 3.0 (via Wikimedia Commons)