DIGESTIVE SYSTEM - GLANDS-16:HORMONE B -CELLS OF PANCREATIC ISLET: a somatostatin b. glucagon c. PP-hormone d. insulin e. VIP -hormone

The correct answer is d. insulin.<br /><br />Insulin is a hormone produced by the beta cells of the pancreatic islets, also known as the islets of Langerhans. It plays a crucial role in regulating blood glucose levels by facilitating the uptake of glucose into cells, particularly in the liver, muscle, and fat tissue. Insulin helps to lower blood glucose levels after a meal by promoting the storage of glucose in the form of glycogen in these tissues. Additionally, insulin inhibits the production of glucose by the liver, further contributing to the regulation of blood glucose levels.