As early as the 18th century, some people put forward an interesting question: "Since the gastric liquid can digest all kinds of meats, why not digest yours?" In order to explain this mystery, many physicologists have the problem of digestive mechanisms. A large number of research. However, the living body cannot be used as a direct research object. Therefore, this problem was still unable to figure out. In 1822, there was a soldier named Seno, because she was accidentally fired, and the rib was played out a big greave. Bao Munte, a surgeon in Michigan, USA, made a very excellent surgery, so that Suto, who is dead, restored to health. Maybe in order to repay the rescue, Suto agreed to play a hole in the stomach in his belly, so that Baomont can observe food in the cave in the stomach. This great experiment has conducted 11 years, providing a flesh spirit through Seno. And the hard work of Baomont's long-year-old month will make people first understand the digestion of some people's stomach: It turns out that there is an appropriate amount of hydrochloric acid in the stomach. It can help decompose the starch into glucose, but this must be available at higher temperatures And people's body temperature is only 37 ° C, it is clear that there is still other unknown material participants' digestive processes. In 1836, when the scholars were hurt, German scientists were first discovered a gastric protease, and its function was very wonderful. There is no activity in terms of too high temperature and too low, only when it is close to the normal body temperature. Swang's discovery, attracting the attention of scientists to enzyme research. Soon, a variety of digestive enzymes were discovered, such as the amylase, pancreatic secretion to decompose carbohydrates and proteins, and slowly dissipated and synthesized in vivo due to the presence of these acids. . The inside of gastric digestion seems to be more and more clear, and the most important thing is to know that gastric wall cells can secrete gastric protease and hydrochloric acid. Hydrochloric acid can kill bacteria in the food, making fiber-rich foods soft and enhances the effect of gastric protease. However, hydrochloric acid is a very corrosive acid, hydrochloric acid secreced from the gastric wall, the concentration is sufficient to dissolve the metal zinc, is it not damage to the stomach? Further, in addition to hydrochloric acid in the gastric juice, it has a gastric protease that can decomposing protein, is it dangerous? Is there a danger of being digestive? Professor Professor, the University of Michigan Medical University, made a very interesting experiment. He put the stomach removed from the human body into a large test tube, then added an appropriate amount of hydrochloric acid and gastric protease (completely according to the concentration of the normal human stomach), the tube was placed in a constant temperature environment of 37 ° C. result. The stomach in the test tube is very serious, and a considerable part is dissolved. Later, he used the same method. Under the same conditions, he put the chicken protein (protein) in a test tube, and the result did not have a mellow, and the mellow was completely dissolved. This test shows that the stomach cannot resist the digestive effect of hydrochloric acid and gastric protease. But strangely, the stomach can be safe in the human body. Professor Professors recognized. In the stomach of the human body, there must be some special mechanism, which prevents the stomach from being dissolved from the enzyme secreted. At this time, he first thought that the cells constituting the stomach wall may be a special cell. In order to confirm this idea, he made an animal test, and made a distant body of the dog into another stomach, and then install a tube in the stomach. Debai found that the lipid substances of the surface membrane surface of the gastric wall cells were found in the substance of the stomach, and the fatty substances of the gastric wall cells had a great relationship with the resistant digestion. Affected by the enzyme. In the human body, bile appears to have a similar effect with detergent.
