Histology and histophysiology of Cells of Islets of Langerhans in the pancrease скачать в хорошем качестве

Histology and histophysiology of Cells of Islets of Langerhans in the pancrease

They are scattered cells in the pancrease They are surrounded by delicate connective tissues and lacks ducts. They are basically six types of cells in the islets of langerhans (a) 3 MAJOR ENDOCRINE CELLS - α-CELLS; They constitute about 15% of the islets endocrine cell population. They are situated at the periphery and with irregular shaped nuclei. They secrete glucagon. - β-CELLS; They constitute about 70% of islets endocrine population. They are centrally located in the islet. They have round nuclei and they secrete insulin. D-CELLS; They are composed of about 10% islet endocrine population. They are situated at the periphery adjacent to A-cells and they secrete somatostatin and VIP. (B) 3-MINOR EXOCRINE CELLS - C-CELLS with no known function - EC-CELLS secrete serotonin - PP-CELLS secrete pancreatic polypeptide #Pancrease #isletsoflangerhan