- Gastric motility: hunger contractions, receptive relaxation, peristalsis, migrating motor complex and reverse peristalsis.
- Gastric emptying: slow, controlled passage of gastric content into duodenum.
Types of Gastric Motility
- Hunger contractions: vigorous, painful contractions of the empty stomach.
- Hunger contractions grow more vigorous the longer the stomach stays empty.
- Receptive relaxation: vagally mediated relaxation of fundus and body on chewing and swallowing.
- Its efferent limb is non-cholinergic, releasing VIP and NO, unlike the usual cholinergic gastric motor pathway.
- Prevents a rise in intragastric pressure as a large meal accumulates; continues as long as food keeps entering.