Human Body Systems: Excretory System

Author Susan Dudley Gold delves into the functions of the digestive and excretory systems. She explains why these systems are discussed together, how they work, and ways to keep healthy. Fascinating tidbits about these systems add an interesting twist.

Most of us think nothing about where food goes when we're done chewing it. This guide follows thc system's various links that help thc body absorb what we eat.