Alpha cells secrete glucagon, which is a hormone that increases blood-glucose levels by inhibiting the absorption of glucose
nto the cells of the body. Beta Cells work by releasing the hormone insulin into the blood.
Delta cells regulate both Alpha and Beta cells by secreting the hormone somatostatian.Somatostain is also known as Growth Hormone Inhibiting Hormone and within the pancreas inhibits both glucagon and insulin release. Finally, F cells work to inhibit GHIH (Somatostatin)