- G cell
In
anatomy , the G cell is a type of cell in the stomach that secretesgastrin . [ [http://www.gerd.com/intro/noframe/micview.htm Diagram at gerd.com] ] It works in conjunction withgastric chief cell s andparietal cells .G cells are found deep within the
gastric glands of thestomach antrum , and occasionally in thepancreas . [Medcyclopaedia|iv_1/g/G_cell]The
vagus nerve innervates the G cells.Gastrin-releasing peptide is released by the post-ganglionic fibers of the vagus nerve onto G cells duringparasympathetic stimulation.Gastrin-releasing peptide, as well as the presence of
amino acids in the stomach, stimulate the release of gastrin from the G cells. Gastrin stimulatesenterochromaffin cells to releasehistamine .Gastrin also targets parietal cells.
The increase of histamine and the direct stimulation by gastrin, cause parietal cells to increase HCl secretion in the stomach.
References
External links
* [http://medical-dictionary.thefreedictionary.com/G+cell Definition at thefreedictionary.com]
*
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