[Bioelectric activity of various parts of the upper urinary tract]

Experiments on 50 dogs carried out by the method of in vivo electromyography have confirmed the localization of the pacemaker of the pyeloureter in the proximal end of the renal pelvis at the pelvicalyceal border. It is determined that the pacemaker biopotentials are characterized by higher frequency, low-voltage rhythmic amplitude, special form and the highest stability of parameters to the diuresis changes and adrenalin influence. Biopotentials are spreading in the distal direction with an increasing speed, amplitude and decreasing frequency. Pyeloureteral junction is the main rhythmoregulator of the bioelectric activity of the ureter. Synchronization of the bioelectric activity of different parts of the pyeloureter depends on the level of its excitability.