Abstract
Electrokinetic studies of different constituents of urine across urinary bladder membranes have been carried out. Attempts have been made to describe role of urinary bladder in flushing action of urine. Since urinary process may be described in terms of electrokinetic phenomena, detailed study of the phenomena may help in understanding various factors responsible for urination. Physical changes involved in the bladder during micturition have also been discussed. Methodology of nonequilibrium thermodynamics has been used to explain the role of different permeants in micturition. Such studies are expected to be of great use in understanding electrophysiology of the bladder.