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 bicarbonate (HCO3−) into the lumen, via the pancreas. This is primarily accomplished by an increase in cyclic AMP that activates CFTR to release chloride anions into the lumen. The luminal Cl− is then involved in a bicarbonate transporter protein exchange, in which the chloride is reabsorbed by the cell and HCO3− is secreted into the lumen. S cells are also one of the main producers of cyclosamatin.
cell, this, article, does, cite, sources, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2009, learn, when, remove, this, t. This article does not cite any sources Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources S cell news newspapers books scholar JSTOR December 2009 Learn how and when to remove this template message For the cell cycle phase see S phase 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 bicarbonate HCO3 into the lumen via the pancreas This is primarily accomplished by an increase in cyclic AMP that activates CFTR to release chloride anions into the lumen The luminal Cl is then involved in a bicarbonate transporter protein exchange in which the chloride is reabsorbed by the cell and HCO3 is secreted into the lumen S cells are also one of the main producers of cyclosamatin S cellDetailsLocationJejunum and duodenumFunctionSecretin secretionIdentifiersLatinendocrinocytus STHH3 04 02 0 00037FMA62936Anatomical terms of microanatomy edit on Wikidata This cell biology article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title S cell amp oldid 1079062696, wikipedia, wiki, book, books, library,
