The digestive tract includes the intestines and the stomach.
The digestive tract begins in the esophagus and ends in the anal canal, which is a long, muscular tube that continues. It includes the esophagus and stomach, the intestines, and the anal canal. The intestines in turn include the small and large intestines. The small intestine can be divided into the duodenum, jejunum, and ileum, and the large intestine is divided into the cecum, appendix, colon, and rectum.
The digestive tract can be divided into the upper and lower gastrointestinal tracts through the suspensory ligament of the duodenum. The upper GI tract includes the esophagus, stomach, and duodenum, while the lower GI tract includes the jejunum, ileum, and colon and rectum.
Diseases of the digestive tract are often interrelated, and the clinical manifestations are complex. Sometimes the diseases cannot be determined by symptoms, and need to be further diagnosed by gastroenteroscopy, etc. Consult a medical professional for specific advice.