what organs produce and secrete substances that aid in digestion
The organ that produces and secretes enzymes that are essential for  proper digestion is the pancreas. The enzymes that the pancreas  produces and secretes are trypsinogen, â¦ , chymotrypsinogen,  pancreatic lipase and amylase.2 people found this useful. know 3 of them, which is stomach, small intestine, and large intestine.