ANATOMY

Detailed explanation-1: -The middle part of your small intestine is the jejunum. The jejunum absorbs most of your nutrients: carbohydrates, fats, minerals, proteins, and vitamins.

Detailed explanation-2: -In the small intestine, absorption occurs through the lumenal face of the mucosa, which is covered with finger-like projections called villi. Each villus is bordered by several pouches or invaginations called crypts. On the average, each villus is surrounded by eight crypts.

Detailed explanation-3: -The food that is digested is absorbed into the blood vessels in the walls of the intestine. The finger-like projections known as villi, drastically increase the surface area of the small intestine for greater absorption of the digested food. The blood carries the absorbed food material to different parts of the body.

Detailed explanation-4: -The small intestine has three parts: the duodenum, jejunum, and ileum. It helps to further digest food coming from the stomach.

Detailed explanation-5: -Each villus has a network of capillaries and fine lymphatic vessels called lacteals close to its surface. The epithelial cells of the villi transport nutrients such as carbohydrates and amino acids from the lumen of the intestine into these capillaries and lacteals (lipids).