Summary
Section of the pyloric sphincter (Rammstedt operation), gastro-enterostomy or partial parasympathetic denervation of the sphincter do not decrease the emptying time of the stomachs of dogs. This would seem to indicate that the normal pyloric sphincter under the influence of the stimuli effective during normal gastric evacuation, is not of appreciable value in gastric food retention.
If the pyloric sphincter itself is of value in food retention in the stomach during normal gastric evacuation, this function is taken over very quickly by some other structure after the sphincter has been sectioned, supplemented or partially parasympathetically denervated.
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From the Department of Physiology, West Virginia University, Morgantown.
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Crisler, G., Van Liere, E.J. Pyloroplasty, gastroenterostomy and partial parasympathetic denervation of the pyloric sphincter, and their relation to the emptying time of the stomach. American Journal of Digestive Diseases and Nutrition 3, 167–169 (1936). https://doi.org/10.1007/BF02999103
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DOI: https://doi.org/10.1007/BF02999103