B. Sc.-II Zoology Practical e-Book

 T. S. of Pancreas 

The pancreas is exocrine as well as endocrine in function.

1. The pancreas consists of two portions namely the endocrine and exocrine portion.

2. The exocrine portion consists of a series of lobules or acini; bound together by connective tissue containing blood vessels, nerve endings, and lymph vessels.

3. Each lobule or acinus is made up of pyramidal pancreatic cells having

granular cytoplasm and prominent nuclei.

4. The lobules or acini open into small ductules which join to form large ducts and which finally form the main pancreatic duct.

6. The endocrine portion consists of Islets of Langerhans between the acini.

Functions of pancreas

1.The exocrine portion of the pancreas produces pancreatic juice which contains trypsin, amylase, and lipase enzymes.

     2. Endocrine part produces two hormones.

         a. Insulin produced by beta cells.

         b. Glucagon produced by alpha cells.