Chapter 1 - What is the unknown reason for chronic diseases in the stomach?

I divided the digestive system into 4 parts – upper, middle, lower, and the joint organs, which are the liver and pancreas. Though they are not part of the intestines, they’re directly connected to them. The spleen is another joint organ, which connected to the stomach, liver, and gall bladder.

If we examine a 4-week-old embryo, we can clearly see that the gut tube is the first organ to develop, and from it start the rest of the body’s organs and systems. in adults, the whole intestines length can reach 30 feet long. along the gut tube, we have 4 one-way valves, which divide the intestines into 4 areas.