The document compares parts of the digestive and nervous systems to different areas of a school. The mouth is like the entrance to the school. The esophagus is like the hallway that leads to the stomach, which is compared to the cafeteria. The liver and pancreas are like classrooms that prepare food for digestion. The small and large intestines and rectum move food through the body like students moving through a playground, field, and exiting at the final bell. In the nervous system, the cerebrum is like the principal, the thalamus is like a game of dodgeball, the cerebellum is a gym, and the brain stem is an office that sends messages.