Functional Role of the Equine Ileocecal Sphincter
Version of Record online: 28 JUN 2008
Neurogastroenterology & Motility
Volume 2, Issue 3, pages 224–229, September 1990
How to Cite
Roger, T., Malbert, C. H. and Ruckebusch, Y. (1990), Functional Role of the Equine Ileocecal Sphincter. Neurogastroenterology & Motility, 2: 224–229. doi: 10.1111/j.1365-2982.1990.tb00029.x
- Issue online: 28 JUN 2008
- Version of Record online: 28 JUN 2008
- Paper received January 12, 1990; accepted April 27, 1990.
- ileocecal sphincter;
- ileocecal reflux;
- cecal distention
Recordings of intraluminal pressure at the equine ileocecal junction indicate the presence of a high-pressure zone of about 6 mm Hg over a distance of 5 cm. Both cecal distention by air and acidification of cecal contents by short-chain fatty acids elicited bursts of phasic pressure waves at the ileocecal junction. Phasic contractions contributed to the concomitant increase of tone at the ileocecal junction. Reflux of acidic cecal contents into the ileum was immediately counteracted by propagated phasic contractions. It appears that contractions propagated toward the cecum, rather than stationary contractions, contribute to the sphincteric properties at the ileocecal junction. The patterns of motor activity of the ileocecal region in species with a well-developed cecum suggest the additional presence of numerous propagated contractions of cecal origin.