Human Anatomy, Part 1 - K. A. Diubenko, A. K. Kolomiitsev, Yu. B. Chaikovsky 2002

Special Part
Splanchnology, splanchnologia [the study of viscera] - Digestive system, systema digestorium
Intestine - Small intestine

The intestine, intestinum, is the largest part of the Digestive System. It extends from the pylorus of The Stomach to the anus. Here, food is digested and absorbed, and waste products are eliminated. Based on its anatomical and functional features, the intestine is divided into the Small Intestine, intestinum tenue, and the Large Intestine, intestinum crassum.

The small intestine, intestinum tenue, begins at the pylorus of the stomach, forms numerous loops and bends, and reaches the junction with the large intestine (the ileocecal orifice). It is the longest section of the alimentary canal, reaching 5–7 m in adults. The diameter of the small intestine is 50 mm in its proximal section (jejunum) and 30 mm in its distal section (ileum). It is the site where mechanical and enzymatic breakdown of food occurs, along with the absorption of Proteins, fats, and CARBOHYDRATES.

The small intestine is divided into three sections: the duodenum, duodenum; the jejunum, jejunum; and the ileum, ileum. These sections of the small intestine are represented by the non-mesenteric part, the duodenum, and the mesenteric parts, the jejunum et ileum.



Last update: 08/08/2026

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