Answer 1 of 6: Ihave read many postings about the weather in Roatan and there is sometimes conflicting info but overall it seems to be that -March can sometimes still be rainy(it looks like it is at the end of the rainy season) -April has very little rain Am...
* D cells produce somatostatin; and. * F or D1 cells produce pancreatic polypeptide. These hormones are all polypeptides. Insulin is secreted only by the B cells whereas the other hormones are also secreted by the gastrointestinal mucosa and somatostatin is also found in the brain.
Back to Top Causes. In the normal pancreas, cells called islet cells produce hormones that regulate a variety of bodily functions, such as blood sugar level and the production of stomach acid. Tumors that arise from islet cells of the pancreas can also produce a variety of hormones, though some do not. Although islet cells produce many different hormones, most tumors release only one hormone that leads to specific symptoms. Pancreatic islet cell tumors can be noncancerous (benign) or cancerous (malignant). Islet cell tumors include: 1  Gastrinomas (Zollinger-Ellison syndrome). 2  Glucagonomas. 3  Insulinomas.