What are important facts about the digestive system?

What are important facts about the digestive system?I have this project and we have to teach the whole class about a system for 75 min. and my group got the digestive system soooo...any help?

Posted by Alone GuY
following links have digestive system facts and r enough for 75 minutes

http://www.nexiumresearch.com/digestive_system_facts.html
http://www.buzzle.com/articles/facts-about-the-digestive-system.html
http://library.thinkquest.org/J0112205/interesting_facts.htm
http://www.disabled-world.com/health/digestive/digestive-system-facts.php

Know better? Leave your own answer in the comments! Facts and information on the human digestive system including how it works and related digestion health problems.

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