Tell about what happens during each step. Applying Draw pictures of the parts of the digestive system on your body outline. Make sure you place the pictures in the proper locations. Find out how much food your stomach can hold. What's Happening Digestion is a mechanical process where food is broken down into smaller and smaller particles until it can be used by the body.
Digestion is also a chemical process, which varies with the kind of substance that is being eaten.
More Challenges Find out how the liver, pancreas, and gallbladder help in digestion. Find out what happens when you get sick and vomit.