[Free Registration/Login may be required to access all resource tools.] Chemical digestion could not take place without the help of digestive enzymes. An enzyme is a protein that speeds up chemical reactions in the body. Digestive...

[Free Registration/Login may be required to access all resource tools.] Yogurt is a good source of calcium. Yogurt also contains active cultures of "good" bacteria. Foods that contain these beneficial bacteria are sometimes called...

This site has a concise description of the digestive system with a nice diagram. The site also provides basic definitions of key parts.

[Free Registration/Login may be required to access all resource tools.] Most people have problems with their digestive system once in a while. These could be symptoms of foodborne illness, food allergies, or a food intolerance. Learn...

Students learn about the organs and major functions of the digestive system, the roles of intestinal bacteria, and about diseases of the digestive system.

A complete student lesson on the human digestive system. Students can listen to the text being read, watch a video on the subject, and view an interactive diagram of the digestive system. When finished, learners take an online quiz.

Answer nine multiple-choice questions about digestion to assess a general understanding of the digestive system.

[Free Registration/Login may be required to access all resource tools.] Covers the major organs and general functions of the digestive system; the digestive functions of the mouth, esophagus, and stomach; and how digestion and absorption...

Try these five multiple-choice questions about the digestive system. After submitting answers, students can review the material.

The parts of the digestive system and how they function are explained. An interactive diagram shows the location of each part of the system, and summarizes what each does. Disorders of the digestive system are also described.

Use this site to learn about the amazing process of digestion through the digestive system. View great drawings about other parts of the body that aid in this process. Available in Spanish.

[Free Registration/Login may be required to access all resource tools.] In the following online lesson students will identify the organs and functions of the digestive system.

[Free Registration/Login may be required to access all resource tools.] You've probably had an upset stomach. Most likely it was due to something you ate. But imagine bleeding from your stomach. That's a little different than your...

This comprehensive study guide covers the main terms and concepts needed for a unit on the digestive system.

[Free Registration/Login may be required to access all resource tools.] The mouth and stomach are just two of the organs of the digestive system. Other digestive system organs are the esophagus, small intestine, and large intestine....

[Free Registration/Login may be required to access all resource tools.] Nutrients in the foods you eat are needed by the cells of your body. How do the nutrients in foods get to your body cells? What organs and processes break down the...

Interactive tests knowledge of the digestive system. Do you know where the stomach, large intestine, and gall bladder are located?

Self-playing slideshow, with an accompanying quiz, explains how the digestive system works.

What do you know about your digestive system? This site feature factoids and more interesting information concerning this human body system. Trace the path of food from one end to the next.

Created to teach students of the 21st century, SOPHIA is bringing the human digestive system straight to your fingertips. Become the commander of your own learning experiences as you take part in this interactive tutorial.

Excellently detailed drawing (with labels) of the digestive system with an accompanying explanation of the digestive process. Includes a glossary and a blank label me print-out.

Find out how bacteria in the digestive system works to digest food.

Learn how the enzymes in the digestive system help with the digestive process in the human body.

Take this ten-question review quiz over the digestive systems of animals. Read more about each question after an incorrect answer is given.