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Enterogastric reflex

From Wikipedia, the free encyclopedia

The enterogastric reflex is one of the three extrinsic reflexes of the gastrointestinal tract, the other two being the gastroileal reflex and the gastrocolic reflex.[1] The enterogastric reflex is stimulated by duodenal distension.[2] It can also be stimulated by a pH of 3-4 in the duodenum and by a pH of 1.5 in the stomach. Upon initiation of the reflex, the release of gastrin by G-cells in the antrum of the stomach is shut off. This in turn inhibits gastric motility and the secretion of gastric acid (HCl).[1]

Emptying inhibitory factors

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The stomach's contents are inhibited from emptying into the small intestine by:

Emptying stimulatory factors

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The stomach's contents empty through the pylorus, allowing digestion to proceed, when there is:

References

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  1. ^ a b "Gastrointestinal Reflex Pathways". LibreTexts. 22 July 2018. Retrieved 27 October 2019.
  2. ^ a b "Enterogastric Reflex". Encyclopedia.com. Retrieved 27 October 2019.
  3. ^ Holzer, H. H.; Raybould, H. E. (April 1992). "Vagal and splanchnic sensory pathways mediate inhibition of gastric motility induced by duodenal distension". American Journal of Physiology. Gastrointestinal and Liver Physiology. 262 (4): G603–G608. doi:10.1152/ajpgi.1992.262.4.G603. PMID 1566842.
  4. ^ Hunt, J. N.; Knox, M. T. (1969). "The slowing of gastric emptying by nine acids". The Journal of Physiology. 201 (1): 161–179. doi:10.1113/jphysiol.1969.sp008749. PMC 1351638. PMID 5773550.
  5. ^ a b "Factors That Regulate Gastric Emptying". Physiology Plus. Archived from the original on 2019-04-27. Retrieved 22 November 2019.
  6. ^ a b Meeroff, J. C.; Go, V. L.; Phillips, S. F. (May 1975). "Control of gastric emptying by osmolality of duodenal contents in man". Gastroenterology. 68 (5 Pt 1): 1144–51. doi:10.1016/S0016-5085(75)80228-9. PMID 1126594. Retrieved 23 November 2019.
  7. ^ "Nervous System of the Digestive System - Gastrointestinal Reflex Pathways". Boundless. Retrieved 31 March 2016.