AP BIOLOGY

Detailed explanation-1: -These groups of cells produce insulin, glucagon and other hormones. They are called endocrine ("secreting internally") cells because the hormones that they produce are secreted directly into the blood.

Detailed explanation-2: -Insulin is released by the ‘beta cells’ in the islets of Langerhans in response to food. Its role is to lower glucose levels in the bloodstream and promote the storage of glucose in fat, muscle, liver and other body tissues. ‘Alpha cells’ in the islets of Langerhans produce another important hormone, glucagon.

Detailed explanation-3: -Beta cells (-cells) are a type of cell found in pancreatic islets that synthesize and secrete insulin and amylin.

Detailed explanation-4: -Pancreatic islets are groups of cells found within the pancreas that release hormones.

Detailed explanation-5: -The majority of the pancreas is made up of exocrine cells ( 95%), which produce pancreatic enzymes for the digestion of proteins, lipids, and carbohydrates in the duodenum. The remainder 5% of the pancreas is made up of endocrine cells located in clusters called islets of Langerhans.