Final answer:
The pancreas secretes Insulin and the gall bladder secretes bile into the duodenum. The bile acid-lipid units carrying fat within the gut are called micelles.
Step-by-step explanation:
The pancreas secretes Insulin and the gall bladder secretes bile via ducts into the duodenum. Therefore, the correct answer to the first part of the question is Insulin and bile. Insulin is a peptide hormone secreted by the β cells of the pancreatic islets of Langerhans and maintains normal blood glucose levels by facilitating cellular glucose uptake, regulating carbohydrate, lipid and protein metabolism and promoting cell division and growth through its mitogenic effects.
The name for the bile acid-lipid units that carry fat within the gut is micelle. These micelles are formed when bile emulsifies large globules of lipids into smaller particles that are then easier to digest chemically by enzymes such as lipase.