<prompt> Which among the following is the function of ghrelin?Stimulation of appetiteSuppression of appetiteStimulation of sleepSuppression of sleep  <response>: Ghrelin is a potent secretagogue of pituitary growth hormone but not adrenocoicotropic hormone, follicle-stimulating hormone, luteinizing hormone, prolactin, or thyroid-stimulating hormone. Ghrelin appears to be an orexigenic regulator of appetite i.e., when ghrelin is elevated, appetite is stimulated, and when it is suppressed, appetite is suppressed. Ref: Dempsey D.T. 2010. Chapter 26. Stomach. In F.C. Brunicardi, D.K. Andersen, T.R. Billiar, D.L. Dunn, J.G. Hunter, J.B. Matthews, R.E. Pollock Eds, Schwazs Principles of Surgery, 9e. 