Skinny intestine
The large intestine is a tube connecting the stomach and intestines. Affects the abdominal aorta and the superior opening of the mesentery. The intestinal wall consists of muscle and connective tissue, but has no mucous membrane. The intestine serves as the site of metabolism and digestion of food eaten.
The small intestine (melena) is located between the large intestine and duodenum. This is where food and drinks must pass through the digestive system. In the part of the intestine in which the breakdown of nutrition occurs, this small intestine is divided into two sections: the ileum and the cecum. The ileum is formed by the jejunum, cecum and colon. The thickness of its walls is 2 mm, the length is 5 m, the width is about 3 cm. There are many folds on its surface. By the type of folds, you can determine the appearance of the small intestine - the intestine has different widths: the upper part is wide, closer to the smaller radius the intestine becomes thinner, after which it gradually expands. Structure ** The intestinal mucosa is represented by columnar epithelium, which is attached to muscle tissue.**
**At the junction of the small and large intestines there are single lymph nodes, and there are also ligaments with the lymph nodes of the celiac trunk and thoracic aorta.** Location The narrowest part of the intestine is the jejunum. The norm for its length is about 2.5-4 m. The average width is 6 cm, the width of the upper part is 8 cm, the lower part is up to 4 cm. Almost its entire surface is occupied by longitudinal folds formed due to the location of blood vessels and nerves. The longest branch is the duodenum, which is the shortest section of the intestine, about 16 cm long.