So g cells are found deep in the exocrine glands of the stomach and release a peptide hormone known as gastrin and this peptide hormone stimulates our parietal cells to release hydrochloric acid into the stomach lumen. Now g cells themselves are actually stimulated by our acetylcholine molecule. So acetylcholine stimulates the g cells to release gastrin and the peptide hormone the gastroent stimulates the parietal cells to basically produce hydrochloric acid. Now another important type of cell that is found in the lining of the stomach are cells known as anterochhromaphin cells or anterochromathin like cells. Our anterochromaphinlike cells are responsible for secreting a type of molecule known as histamine and what histamine does is it also stimulates the parietal cells to release hydrochloric acid. So we see two important components.