Segmentation contractions

From Wikipedia, the free encyclopedia

Segmentation contractions (or movements) are a type of gastric motility.

Unlike peristalsis, which predominates in the esophagus, segmentation contractions predominate in the small intestine. While peristalsis involves one-way motion in the caudal direction, segmentation contractions move chyme in both directions, which allows greater mixing with the secretions of the intestine.

[edit] External links

• Physiology at MCG 6/6ch3/s6ch3_8
• Animation at colostate.edu
• m_21/12543457 at Dorland's Medical Dictionary

v • d • e Digestive system, physiology: gastrointestinal physiology Enteric nervous system Meissner's plexus - Auerbach's plexus Exocrine Chief cells (Pepsinogen) - Parietal cells (Gastric acid, Intrinsic factor) - Goblet cells (Mucus) Endocrine/paracrine G cells (gastrin), D cells (somatostatin) - ECL cells (Histamine) - enterogastrone: I cells (CCK), K cells (GIP), S cells (secretin), Enteroendocrine cells Border Brunner's glands - Paneth cells - Enterocytes Fluids Saliva - Bile - Intestinal juice - Gastric juice - Pancreatic juice Processes Swallowing - Vomiting - Peristalsis (Interstitial cell of Cajal) - Migrating motor complex - Borborygmus - Gastrocolic reflex - Segmentation contractions - Defecation