This simple animation explains how food is digested in humans. The animation is basic and humorous.
Basics of Digestion
If you want to see Peristalsis, see this Flash animation.
Peristalsis
This is a marking exercise using digestive system. The explanations are very good.
Digestion Drag & Drop
Another marking exercise for digestive system
Drag & Drop Digestion
This is an activity explaining the processes of digestive tract. Color codes have to be kept at the proper position to succeed. Simple one.
Digestive Process - Drag & Drop