<Li> Pancreatic islets (islets of Langerhans) <Ul> <Li> Alpha cells (secreting glucagon) </Li> <Li> Beta cells (secreting insulin and amylin) </Li> <Li> Delta cells (secreting somatostatin) </Li> <Li> PP cells (gamma cells) (secreting pancreatic polypeptide) </Li> <Li> Epsilon cells (secreting ghrelin) </Li> </Ul> </Li> <Ul> <Li> Alpha cells (secreting glucagon) </Li> <Li> Beta cells (secreting insulin and amylin) </Li> <Li> Delta cells (secreting somatostatin) </Li> <Li> PP cells (gamma cells) (secreting pancreatic polypeptide) </Li> <Li> Epsilon cells (secreting ghrelin) </Li> </Ul> <Li> Alpha cells (secreting glucagon) </Li> <Li> Beta cells (secreting insulin and amylin) </Li>

Types of cells in the human body and their functions