Organization of the pancreas. A Organization of the pancreas. A. The anatomic arrangement of the gallbladder and pancreas and their associated ducts, which deliver secretions to the duodenum (left), and the organization of the exocrine and endocrine cells, and ducts in the pancreas (right). The inset shows a representative section through the pancreas at low magnification. Asterisks indicate the islets of Langerhans. The pancreas is subdivided into three indistinct regions: the head, the body and the tail. Pancreatic islets are scattered among exocrine acini in all three regions, and are most abundant in the tail. B. Representative section of the pancreas at higher magnification than in part A. Note the difference between the organization of acinar cells (exocrine) and cells in the islet of Langerhans (endocrine). The arrow indicates a small blood vessel. C. Section through the exocrine pancreas showing acinar cells, centroacinar cells, and intercalated ducts at higher magnification than in part B. Note the abundant zymogen granules located apically in acinar cells. Source: DIGESTIVE SYSTEM, The Big Picture: Histology Citation: Ash R, Morton DA, Scott SA. The Big Picture: Histology; 2017 Available at: https://accessphysiotherapy.mhmedical.com/DownloadImage.aspx?image=/data/books/2058/ashhist_ch12_f007a.png&sec=155784738&BookID=2058&ChapterSecID=155784639&imagename= Accessed: November 11, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved