<prompt> Function of incretin is -Increased heart rateIncreased insulin secretionIncreased respiratory rateStimulate erythropoiesis  <response>: Ans. is b i.e., Increased insulin secretion o Incretins are GI hormones which are secreted by enteroendocrine cells in response to meals.o The most important action of incretins is to stimulate insulin secretion after a meal.o Two important GI incretins are.i Glucagon-like peptide 1 GLP-1.ii Glucose-dependent insulinotropic polypeptide GIP.o GLP-1 is more insulinotropic hormone. 