Exploring the Digestive and Excretory Systems: What Is Excretion?

This series of videos takes students on a fascinating journey, following food as it travels through the digestive system. Clear animations illustrate the functions of the major digestive and excretory structures. Concepts and terminology include: nutrients, salivary glands, teeth, mechanical and chemical digestion, esophagus, peristalsis, stomach, small intestine, enzymes, chyme, villi, large intestine, liver, gallbladder, pancreas, metabolism, colon cancer, acid reflux, kidneys, urea, and nephrons.