Cell membranes are filled with aquiporins, which allows water to freely move back and forth. But if sodium can't get in, like you said, the water gets dragged out towards it. And that's an important concept, because that means you're now shifting fluids inside and outside.
In this BIG episode, Dr Matt & Dr Mike discuss electrolytes and ions! They explain what important roles substances like sodium (Na+), Potassium (K+), Chloride (Cl-), Calcium (Ca2+), and Magnesium (Mg2+) play in the body!What happens when we have too much or too little??
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