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1 Ghrelin is secreted by endocrine cells in the stomach, especially when one is hungry and. 2  acts on the hypothalamus to stimulate feeding. 3  This action counteracts the inhibition of feeding by leptin and PYY3-36. Ghrelin is secreted by endocrine cells in the stomach, especially when one is hungry and. 2  acts on the hypothalamus to stimulate feeding. 3  This action counteracts the inhibition of feeding by leptin and PYY3-36.
From Wikipedia, the free encyclopedia. In anatomy, the G cell is a type of cell in the stomach and duodenum that secretes gastrin. It works in conjunction with gastric chief cells and parietal cells. G cells are found deep within the pyloric glands of the stomach antrum, and occasionally in the pancreas and duodenum.The vagus nerve innervates the G cells.Gastrin-releasing peptide is released by the post-ganglionic fibers of the vagus nerve onto G cells during parasympathetic stimulation.n anatomy, the G cell is a type of cell in the stomach and duodenum that secretes gastrin.