Description: The jejunum is the middle section of the small intestine, located between the duodenum and the ileum. Its primary function is the absorption of essential nutrients from digested food. This part of the small intestine is characterized by a highly specialized mucosa, with villi and microvilli that significantly increase the absorption surface area. The jejunum is responsible for the absorption of most carbohydrates, amino acids, and fatty acids, as well as vitamins and minerals. Its structure consists of several layers, including the mucosa, submucosa, muscularis, and serosa, each playing a crucial role in intestinal function. Additionally, the jejunum has a rich blood supply, facilitating the transport of absorbed nutrients into the circulatory system. The health of the jejunum is vital for overall well-being, as any alteration in its function can lead to malnutrition issues and various gastrointestinal diseases. In summary, the jejunum is not only an essential part of the digestive system but also plays a crucial role in the metabolic health of the body.
