<prompt> Appetite is increased byLeptinGLPPeptide YYGhrelin  <response>: Ans. d GhrelinRef: Ganong, 25th edp.485GhrelinGhrelin is a 28-amino acid peptide secreted primarily by oxyntic gland area of the stomachMajor Functions of ghrelin are,It increases the appetite orexinergicIncreases gastric motilityIncreases secretion of gastric acid,Increases adipogenesisIncreases insulin secretionIncreases growth hormoneGhrelin levels peak just before food intake begins fasting statePlasma levels of ghrelin are low in obese personsGhrelin levels are high in anorexia nervosa 