S cell

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S cells are cells which release secretin, found in the jejunum and duodenum. They are stimulated by a drop in pH to 4 or below in the small intestine's lumen. The released secretin will increase the secretion of HCO₃^- into the lumen, via the pancreas.

For more information on the function of S cells, see article secretin.

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