http://www.constipationadvice.co.uk/understanding_constipation/normal_digestive_system_pla

http://www.grsites.com/

http://www.gifmania.co.uk/food/broccoli/

http://www.ilovewavs.com/Effects/Home/Sound%20Effect%20-%20Eating%20Carrots.wav

http://yucky.discovery.com/flash/body/pg000126.html

http://kidshealth.org/kid/htbw/digestive_system.html

http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/

http://www.surfnetkids.com/digestive_system.htm