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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.
The concentration of goblet cells varies throughout the body; their numbers are small relative to other cell types, however in tissues such as the colon they are much more abundant. Shape. The function of goblet cells is to secrete fundamental parts of mucus called mucins. These mucins are glycosylated proteins that are suspended in electrolytes. The mucus secreted by goblet cells are very important; mucus protects the body from chemical damage, and also helps to eliminate particles and microorganisms from the respiratory tree. Secretion of mucus from goblet cells are induced by irritating stimuli rather than by hormones.