Origin and characterization of migrating myoelectric complex in rabbits.

摘要: Myoelectric activity patterns of the upper gastrointestinal tract were recorded using chronically implanted electrodes in conscious rabbits. A cyclical pattern intense spiking occurring on almost every slow wave for 10–15 min, corresponding to regular phase or III migrating myoelectric complex (MMC), was recorded. This detected by distal ligament Treitz proximal jejunum at a frequency 9.4–10.6/24 hr. The MMC occurred both fed and fasted animals, regardless presence cecotrophy. Initiation persisted after transplantation pancreatic duct opening duodenum 5 cm from pylorus when gastric contents emptied directly into through large gastrojejunostomy. It is concluded that rabbit small intestine persistently initiated biliary ducts. jejunal origin reminiscent seen transiently 8–10 hr meal dogs during change motor activity.