What is the part of the human body that absorbs nutrients?

As the name suggests, man is iron and food is steel. For the health of Jiasenti, I need to eat seriously. In this way, the body's ability to absorb nutrients can be further maintained. In fact, what types of nutrients the human body absorbs is also a topic that people are very concerned about. After all, only when you know what to eat can you supplement it. Where is the part of the human body that absorbs nutrients?

The small intestine is the main place where food is digested. Absorption refers to the process in which various nutrients, including water, inorganic salts, etc., enter the blood and lymphatic vessels through the epithelial cells of the digestive tract.

The three major nutrients are hydrolyzed, digested and absorbed through corresponding enzymes. The final product of carbohydrate digestion is glucose, which is actively transported into the capillaries of the small intestinal epithelium and becomes blood sugar. The final product of protein digestion is amino acids, which also enter the small intestinal epithelial capillaries through active transport. The final products of fat digestion are glycerol and fatty acids, both of which mainly enter the capillary lymphatic vessels of the small intestinal epithelium.

The human stomach mainly absorbs a small amount of water, inorganic salts and alcohol; the small intestine absorbs inorganic salts, glucose, vitamins, amino acids, glycerol, fatty acids and water; and the large intestine absorbs a small amount of water, inorganic salts and some vitamins.

1. The small intestine is the longest digestive organ in the human body, with a total length of 5-7 meters, providing a place for the full digestion of food;

2. The small intestinal mucosa forms many annular folds and a large number of villi protruding into the intestinal cavity. The surface of each villus is a layer of columnar epithelial cells, and the cell membrane at the top of the columnar epithelial cells forms many tiny protrusions, called microvilli. The annular folds on the small intestinal mucosa, the small intestinal villi and the 1,000 to 3,000 microvilli on the free surface of each small intestinal villus cell increase the surface area of ​​the small intestinal mucosa by 600 times to about 200 square meters. The huge absorption area of ​​the small intestine is conducive to improving absorption efficiency;

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3. There are various digestive gland cell groups on the inner wall of the small intestine, which can secrete a variety of digestive enzymes to increase the types of digestible food; 4. The entrances of the pancreatic duct and bile duct are at the duodenal end of the small intestine, which helps digest a variety of foods.

In fact, the part of the human body that absorbs nutrients is the small intestine. And often in the summer, there will be varying degrees of decreased appetite. Moreover, patients at this time can actually eat some small intestine lotus seed soup. And at this time, you can often eat some coix seeds.