| Hormone |
| Gastrin |
| Cholecystokinin |
| Secretin |
| Gastric inhibitory peptide* |
| Pancreatic polypeptide |
| Motilin |
| Insulin |
| Glucagon |
| Enteroglucagon |
| Peptide YY |
| Somatostatin |
| Paracrine |
| Somatostatin |
| Peptide YY |
| Neurocrine |
| Cholecystokinin |
| Secretin |
| Gastrin-releasing peptide |
| Neuropeptide Y |
| Peptide YY |
| Vasoactive intestinal peptide |
| Neurotensin |
| Peptide histidine-isoleucine |
| Substance P |
| Substance K |
| Enkephalin |
| Dynorphin |
