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The pancreas is a long, flat gland about 13–15 cm long that lies between your stomach and spine. It is divided into three parts:
- the large rounded end, called the head of the pancreas
- the middle part, known as the body
- the narrow end, called the tail.
A tube called the pancreatic duct connects the pancreas to the first part of the small bowel (duodenum). Another tube, called the common bile duct, joins with the pancreatic duct and connects the liver and gall bladder to the duodenum.
What the pancreas does
Exocrine function – The pancreas is part of the digestive system, which helps the body digest food and turn it into energy. Exocrine cells make pancreatic enzymes, which are digestive juices. The pancreatic duct carries these juices from the pancreas into the duodenum, where they help to break down food. Most of the pancreas is made up of exocrine tissue.
Endocrine function – The pancreas is also part of the endocrine system, a group of glands that makes the body’s hormones. Endocrine cells in the pancreas make hormones that control blood sugar levels, the amount of acid produced by the stomach, and how quickly food is absorbed. For example, the hormone insulin decreases the level of sugar in the blood, while the hormone glucagon increases it.
This information is reviewed by
This information was last reviewed February 2020 by the following expert content reviewers: Dr Lorraine Chantrill, Head of Department, Medical Oncology, Illawarra Shoalhaven Local Health District, NSW; Marion Bamblett, Nurse Unit Manager, Cancer Centre, Fiona Stanley Hospital, WA; Prof Katherine Clark, Clinical Director of Palliative Care, Northern Sydney Local Health District Cancer and Palliative Care Network, and Conjoint Professor, Northern Clinical School, The University of Sydney, NSW; Lynda Dunstone, Consumer; Kate Graham, Accredited Practising Dietitian – Upper GI Dietitian, Peter MacCallum Cancer Centre, VIC; Dr Gina Hesselberg, Radiation Oncologist, St George Hospital Cancer Centre, NSW; Dr Marni Nenke, Endocrinologist and Mary Overton Early Career Research Fellow, Royal Adelaide Hospital, SA; Caitriona Nienaber, 13 11 20 Consultant, Cancer Council WA; A/Prof Nicholas O’Rourke, Head of Hepatobiliary Surgery, Royal Brisbane Hospital and The University of Queensland, QLD; Rose Rocca, Senior Clinical Dietitian – Upper GI, Peter MacCallum Cancer Centre, VIC; Gail Smith, Consumer.