It starts from the mouth to the phrynx then esophagus then it enters the stomach, but before it enters the stomach it enters the esophageal sphincter that prevents the food from going back. After the stomach it goes out of the pyloric sphincter then enters the duodenum,jejunum,and the ileum-three parts of the small intestine ,then it goes out of the ileocecal valve then enters the large intestine then it goes to the rectum and lastly to the anus.