[The motoricity cycle of the small intestine].
The electrical spike activity of the small intestine at the gastroduodenal junction occurs as migrating myoelectric complexes (MMCs), initiated regularly at intervals of 90-100 min. in the adult sheep and of 20-30 min. in the neonate. This ultradian rhythm, generated by the enteric nervous system, may become identical in the adult and in the neonate, by the use of methysergide which interacts with 5-HT myenteric neurones. The results suggest a postnatal development of a serotoninergic inhibitory system, involved in the control of the basic rest-activity cycle of the small intestine.
D006916:5-Hydroxytryptophan / Q000494:pharmacology; D000375:Aging; D000818:Animals; D000831:Animals, Newborn; D002417:Cattle; D004553:Electric Conductivity; D005260:Female; D010134:Fenclonine / Q000494:pharmacology; D007421:Intestine, Small / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D008784:Methysergide / Q000494:pharmacology; D010507:Periodicity; D012756:Sheep; D013045:Species Specificity
D006916:5-Hydroxytryptophan; D010134:Fenclonine; D008784:Methysergide
Le cycle moteur de l'intestin grêle.