In which part of the body are most nutrients absorbed?

The small intestine is the primary site for nutrient absorption in the body due to its extensive surface area, which is enhanced by villi and microvilli. This structure allows for a greater volume of nutrients to be absorbed efficiently as food passes through. The small intestine is divided into three sections: the duodenum, jejunum, and ileum, with the majority of nutrient absorption occurring in the jejunum and ileum.

Most nutrients, including carbohydrates, proteins, fats, vitamins, and minerals, are absorbed through the walls of the small intestine into the bloodstream, which then transports them to various cells and tissues throughout the body for use. The stomach primarily serves the role of breaking down food and does not absorb significant nutrients, while the large intestine focuses mainly on water absorption and the formation of waste. The pancreas produces enzymes and hormones that aid digestion but is not involved in nutrient absorption itself.