* Potassium is absorbed mainly by the paracellular route with water via osmosis
+
* Na<sup>+</sup> / K<sup>+</sup> ATPases in the basolateral membrane move potassium into epithelial cells from the interstitial spaces in order to remove sodium
+
* Potassium is then cleared from the cells using a co-transporter with chlorine
+
* No potassium excretion occurs here due to the lack of potassium ion channels in the apical membrane
===[[Renal Handling of Urea - Physiology| Urea]]===
===[[Renal Handling of Urea - Physiology| Urea]]===