This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Physiology
Function of incretin is - 
Select and explain. 
A. Increased heart rate, B. Increased insulin secretion, C. Increased respiratory rate, D. Stimulate erythropoiesis
B: Increased insulin secretion
Answer: B: Increased insulin secretion 
Explanation: 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.