Related Experiment Video
Updated: Oct 3, 2026

Isolating and Imaging Live, Intact Pacemaker Regions of Mouse Renal Pelvis by Vibratome Sectioning
Published on: April 30, 2021
A constant electrical activity of the renal pelvis correlated to ureteral peristalsis
Abstract:
Using a bipolar macroelectrode, simultaneous recordings of both pelvic and ureteral electromyograms (EMG) were carried out in dogs. The recordings were performed at 3 stages of urine flow; oliguric, increasing and diuretic stages. The results showed that the interval of the pelvic discharge was constant while its speed of propagation was slower than that of the ureter (1.32 cm/sec and 2.12 cm/sec, respectively). At oliguric stage the interperstaltic interval in the ureter constituted a multiple of the pelvic discharge interval. Ureteral peristaltic rate reached that of the renal pelvis with increasing urine flow. These results are discussed in relation to a hypothesis of a renal pacemaker.
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