The jejunum is the midsection of the small intestine, connecting the duodenum to the ileum. It is about 2.5 m long, and contains the plicae circulares, and villi that increase its surface area. Products of digestion (sugars, amino acids, and fatty acids) are absorbed into the bloodstream here.
Not to be confused with the cells of the islets of Langerhans, found in the pancreas, or Langhans giant cell.
In Human Anatomy and Physiology. Yes, there are cells in the islets of Langerhans, which are situated in the pancreas, called the beta cells which release insulin which causes blood glucose levels to decrease â¦ .There are also alpha cells which release glucagon which cause blood glucose levels to increase.Alexander Rowan.nsulin is produced by the Islets of Langerhans in the pancreas. These are cells scattered throughout the pancreas, about a million of them in a healthy adult. Their are five â¦ different types of these cells.