Graphic demonstrations explain the processes of digestion and excretion. The categories of nutrients are summarized using examples of the foods we eat. Other terminology includes: proteins, amino acids, carbohydrates, vitamins, stomach, mechanical digestion, chemical digestion, ingestion, esophagus, peristalsis, small and large intestines, nephrons and kidneys.

Originally released by Visual Learning, 2003. Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015. Teacher's guide and student activities available under Additional info tag. Also available as DVD (DVD012).

Nutrition (2:13); --Types of Nutrients (4:20); -- Digestion of Food (3:45); -- The Excretory System (1:01); -- Excretory Organs (2:07); -- Digestion and Excretion: Summing Up (1:32); -- Digestion and Excretion: Video Quiz (2:53); -- Credits: Digestion and Excretion (1:14); -- clip (0:08); .