What is the explanation in the changes in the amount of fatty acid in the duodenum?

The amount of fatty acids in the duodenum can change based on factors such as dietary intake, hormonal regulation, and bile secretion. After a meal high in fat, the release of cholecystokinin stimulates the gallbladder to release bile which aids in the emulsification of fats. This can increase the amount of fatty acids present in the duodenum for absorption.