cholecystokinin hormone on the gastrointestinal tract

anatomical anatomy appetite bile body cck chart cholecystokinin diagram diet digestion digestive disease duodenum endocrine enteroendocrine gallbladder gastric gastrointestinal gland gut health healthy hormone hormones human hunger illustration insulin intestinal intestine medical medicine metabolism organ pancreas pancreozymin peptic peptide physiology poster pyloric regulate regulation science secreted small somatostatin sphincter stomach structure synthesized system tract vector