The duodenum, jejunum, and ileum are the three sections that make up the [[1]].

The duodenum, jejunum, and ileum are the three sections that make up the small intestine.

The main place for nutrient absorption in the digestive system is the small intestine.

The duodenum, jejunum, and ileum are the three sections that make up the small intestine.

The duodenum is in charge of the earliest stages of nutrient absorption, including the breakdown of food by digestive enzymes. 

The jejunum is well known for its function in the absorption of several nutrients, including carbohydrates, proteins, and lipids. Nutrients can be absorbed more effectively in the jejunum as it has a high surface area.

The ileum is the final and longest part of the intestine, and it continues the process of nutrient absorption that begins in the jejunum. Any remaining nutrients are absorbed into the bloodstream and transported to the liver and other tissues for further processing and utilization.