Name the cell types present in the islets of Langerhans - write the name in full (4marks)

The islets of Langerhans, found in the pancreas, consist of several types of cells, each with distinct functions. The main cell types present in the islets of Langerhans include:

1. Alpha (α) cells - These cells produce glucagon, which raises blood glucose levels.
2. Beta (β) cells - These cells produce insulin, which lowers blood glucose levels.
3. Delta (δ) cells - These cells produce somatostatin, which regulates the secretion of both insulin and glucagon.
4. PP (F) cells - These cells produce pancreatic polypeptide, which is involved in the regulation of pancreatic exocrine and endocrine functions.

Together, these cell types play a crucial role in maintaining glucose homeostasis in the body.