Digestion is very diverse and important. Although it has been discussed before, it is necessary to mention it again here. Digestion begins in the mouth, and chewing will * * * the mouth and lower digestive tract, and * * * secrete digestive juice. Saliva in the mouth contains an amylase, which can digest starchy foods such as noodles, rice, potatoes and bread.
When you swallow food, it will reach your stomach through the esophagus. Gastric acid (gastric acid) is secreted by the stomach, and its intensity is amazing. Strong acid can digest protein food, such as meat, fish, beans, dairy products and nuts. How terrible is the erosivity of gastric acid? For example, if gastric acid is dripped on the skin, the skin will burn a hole-like wound immediately. But the stomach contains a thick layer of mucus, so it can prevent gastric acid erosion.
Intestine is one of the most important detoxification systems in the body. When food leaves the stomach, it immediately enters the small intestine. The small intestine is about 7 meters long, and its main function is to digest food, absorb nutrition and water in food, and make some digestive enzymes. Among them, digestive enzymes include: peptidase decomposes protein; Maltase decomposes maltose; Sucrase decomposes sucrose. Some people also secrete lactase to break down lactose. The pancreas secretes a variety of enzymes to the small intestine to help digestion. The gallbladder secretes bile to the small intestine to help digest fat. Nutrients in food will enter the blood and flow all over the body after being absorbed by the small intestine, so the function of the small intestine is very important. If the small intestine is poorly absorbed, nutrients will not be absorbed normally.
After leaving the small intestine, the remaining food will immediately enter the large intestine. The main function of the large intestine is to absorb vitamins B 1, B2, B 12 and K produced by the decomposition of probiotics, and to maintain the body's liquid balance by absorbing 90% of the water in the waste. At this point, most of the food has become liquid. The large intestine is about 1.5m long and 0.7m wide, but it cannot digest food.
Food molecules will enter the blood after being absorbed by the intestinal wall, and then be transported to the liver through the blood flowing all over the body. In the liver, some food molecules will be further decomposed, while others will be converted into fuel stored in the body, providing energy for various functions of the body.
Because the toxin will flow all over the body with the blood, when the toxin in the blood enters the intestine, it will carry out a series of cleaning and detoxification work, and then enter the blood again. In addition, toxins in the blood will also be sent to the liver for detoxification. As for the remaining waste, because it contains a lot of toxins, it will be excreted. If it cannot be excreted smoothly and accumulated in the body for a long time, it will induce diseases.