Bolus propagation in pig ureter in vitro.
Pig ureters were made to propagate injected fluid boluses by electrical stimulation in vitro. The propagation velocity was determined from EMG measurements made at several points along the ureter. It was found that this velocity varied both along the ureter and as a function of time, and that it was related to the contraction pressure but not to the bolus size.
D000818:Animals; D004558:Electric Stimulation; D066298:In Vitro Techniques; D008954:Models, Biological; D009068:Movement; D011312:Pressure; D013552:Swine; D014513:Ureter / Q000502:physiology*; D014563:Urodynamics