This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Ghrelin is responsible for - 
Select and explain. 
A. Stimulation of appetite, B. Suppression of appetite, C. Stimulation of of sleep, D. Suppression of sleep
A: Stimulation of appetite
Answer: A: Stimulation of appetite 
Explanation: Ghrelin, secreted from oxyntic glands, stimulates acid secretion but also appetite and gastric emptying . Ref - Davidsons 23e p767