Each part of the digestive system has a function. Find out more with Bitesize. For students between the ages of 11 and 14.

The mouth is where digestion begins, and it breaks down food into smaller particles. Read more about the functions and biological structure of the mouth.

Be careful not to destroy circulatory system. Be especially careful with the heart when opening the mouth. Four functions of digestive tract: 1. storage 2. physical breakdown 3. chemical breakdown 4.