Which structures of the digestive system, aside from the small intestine, release substances that help break down food in the small intestine?

The pancreas releases digestive enzymes into the small intestine, where they help break down carbohydrates, proteins, and fats. The liver produces bile, which helps break large fat droplets into smaller ones. Therefore, the pancreas and liver are the structures that release substances that aid digestion in the small intestine.

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