Attached to the duodenum, for ten points, is what insulin-secreting gland, site of the islets of Langerhans?
The duct of Wirsung is found in this organ which secretes zymogens that transform into the majority of digestive enzymes.  Besides secreting a form of amylase and lipase from its acinar cells, this compound gland is easily affected by acetylcholine and CCK.  Attached to the duodenum, for ten points, is what insulin-secreting gland, site of the islets of Langerhans?
The duct of Wirsung is found in this organ which secretes zymogens that transform into the majority of digestive enzymes.  
pancreas