The pancreas is a 6- to 10-inch (18 to 25 cm) long organ located behind the stomach in the back of the abdomen. It is spongy and shaped somewhat like a fish that is extended horizontally across the abdomen. The head of the pancreas is the largest part and lays on the right side of the abdomen where the stomach is attached to the first part of the small intestine (the duodenum). It is here where the stomach empties partially digested food into the small intestine and this chyme mixes with the secretions from the pancreas.

The tail or body of the pancreas - its narrowest part - extends to the left side of the abdomen next to the spleen. There is a duct that runs the length of the pancreas, and it is joined by several small branches from the glandular tissue. The end of this duct is connected to a similar duct that comes from the liver, which delivers bile to the duodenum.

There are two main types of tissue found in the pancreas: exocrine tissue and endocrine tissue. Most of the pancreas - about 95% - is exocrine tissue that produces pancreatic enzymes to aid digestion. A healthy pancreas makes about 2.2 pints (1 liter) of these enzymes every day.

The remainder of the pancreas is composed of hundreds of thousands of endocrine cells known as islets of Langerhans. These grape-like cell clusters produce important hormones that regulate pancreatic secretions and control blood sugar.

On the bing link on my sources there are several images on what a pancreas should look like.
Source(s):
http://www.medicalnewstoday.com/articles/10011.php

http://www.bing.com/health/article.aspx?id=articles%2fwp%2fpages%2fp%2fa%2f...

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