On the changes in the membrane potential and the contractile activity of the smooth muscle of the lower esophageal and ileo-caecal sphincters upon increased K in the nutrient solution.

The influence of increased K+ in the nutrient solution on the excitatory-contractile process in smooth-muscle strips from the lower esophageal sphincter (LES) and the ileo-caecal sphincter (ICS) of cats is studied. The changes in the membrane potential (MP) and the tension (T) are recorded by the sucrose gap method. The rise of the K+ concentration in the… CONTINUE READING