The Digestive System
The digestive system is essentially one long tube called different names at different points. Food goes through the mouth down the pharynx/throat, down the esophagus into the stomach, through the small intestine, through the large intestine, and out of the anus. Below is a sketch that I made when I was learning about some of these things. It is included for the teacher's consideration.
(Note that the scholar learned about the tube and that some organs "skirted" in some chemicals at different points to help the digestive process. I don't think that we examined lipase. I don't know about chime. Simplicity in teaching is very important.)