Final answer:
Encapsulated pancreatic enzymes are secreted by pancreatic acinar cells into the lesser sac, constituting part of the pancreatic juice which includes enzymes for digesting fats, nucleic acids, and carbohydrates.
Step-by-step explanation:
The encapsulated pancreatic enzymes that are commonly found in the lesser sac are produced by pancreatic acinar cells. These enzymes become activated when they enter the duodenum, aiding in the digestion of nutrients. The acinar cells secrete these enzymes as part of the pancreatic juice, which contains a variety of digestive enzymes such as pancreatic lipase for fat digestion, pancreatic nuclease for nucleic acid digestion, pancreatic amylase for carbohydrate digestion, and bicarbonate to help neutralize the acidity of chyme from the stomach. This pancreatic juice is delivered to the small intestine through the main pancreatic duct (or duct of Wirsung) and the smaller accessory duct.