Final answer:
Insulin release is primarily triggered by the hormone glucose-dependent insulinotropic peptide (GIP). GIP is secreted by the gastrointestinal tract in response to the presence of food, especially glucose. Once GIP is released, it stimulates the beta cells of the pancreas to produce and release insulin.
Step-by-step explanation:
Insulin release is primarily triggered by the hormone glucose-dependent insulinotropic peptide (GIP) and not by amylin or GLP-1. GIP is secreted by the gastrointestinal tract in response to the presence of food, especially glucose.
Once GIP is released, it stimulates the beta cells of the pancreas to produce and release insulin. This process helps regulate blood glucose levels and allows cells to take in glucose from the bloodstream.