Sodium and Chloride in Cells

So 75% at least of the positively charged ions are potassium in the cell. Outside the cell, it's mostly- So this is extra cellular now? Yeah, extra cellular. It's not potassium, it's sodium. And then you've got trace quantities of potassium, calcium, magnesium, and phosphate. All these things exert a pulling force on water. That's why we're bringing them up.