Microscopic exocrine units of pancreas are called Acinar and duct tissues and endocrine structures are called as islets of Langerhans.
Explanation:
Pancreas is the small organ which is located exactly between the place below the stomach and above the abdomen. It has two regions based upon the function which are called as endocrine part and exocrine part.
The “microscopic exocrine units of pancreas” are called acinar and duct tissues and are involved in digestion and the endocrine structures are known as the islets of Langerhans and they are involved in secretion of blood sugars.