See It · Fluid, Electrolyte, and Acid-Base Balance

Fluid and Acid-Base Walkthrough

Where body water lives, how electrolytes are kept in range, and how blood pH stays near 7.40. Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · See It: Anatomy & Physiology · Chapter 26, Fluid, Electrolyte, and Acid-Base Balance (OpenStax Anatomy & Physiology 2e) · Use the left and right arrow keys to move between steps. Practice next in the Fluid and Acid-Base Lab (ABG Detective, Acid-Base Simulator, Fluid Shift Simulator, Electrolyte Matcher). Calcium, PTH and calcitonin have their own Calcium Balance Simulator.
Diagrams are simplified and not to scale. Particle counts, cell size changes and time scales are exaggerated so you can see them. Volumes are rounded values for a 70-kg adult; lab ranges are typical textbook ranges and vary a little between labs.