What part of the digestive tract is primarily responsible for nutrient absorption?

The duodenum is the first section of the small intestine, where a significant portion of digestion and nutrient absorption occurs. It receives chyme from the stomach and is where bile and pancreatic juices enter to help further break down the food. While the ileum and jejunum are also parts of the small intestine involved in nutrient absorption, the duodenum plays a crucial role in the digestive process, facilitating the early and active absorption of essential nutrients. The esophagus, on the other hand, is primarily responsible for transporting food from the mouth to the stomach and does not participate in nutrient absorption. Thus, the duodenum is recognized as a key site for initial nutrient absorption following digestion in the stomach.