Regulation of cellular volume in rat myometrium

1.1. Pieces of rat myometrium that had been made Na+-rich by incubation in K+-free medium at 4 °C, subsequently lost weight and extruded Na+ and water on being rewarmed at 37 °C. In the present study the mechanism of these changes was examined.2.2. The process was not dependent on the coupled Na+-K+ pump since it was not abolished by omission of K+ or by absence of external Na+. It was however abolished by metabolic inhibition, produced by …