system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following increase small intestinal motility except
assistant
The correct answer is  Secretin inhibits small intestinal motility. Factors that increase the peristaltic activity of small intestine Hormonal- Gastrin, CCK, insulin, motilin and serotonin Neural - Duodenal distension by chyme, gastroenteric reflex, gastroileal reflexes, parasympathetic (ACh) stimulation. Factors that decrease the peristaltic activity of small intestin: Hormone- Secretin and glucagon Neural- Sympathetic stimulation Gastroileal reflex- On reaching the ileocecal valve, the chyme is sometimes blocked for several hours until the person eats another meal. At that time, a gastroileal reflex intensifies peristalsis in the ileum and forces the remaining chyme through the ileocecal valve into the cecum of the large intestine. Ref: Guyton and Hall 13th edition Pgno: 813