Welcome ot the Respiratory System
Thinkquest
http://library.thinkquest.org/5777/resp1.htm

Your Respiratory System
The Yuckiest Site on the Internet
http://yucky.discovery.com/flash/body/pg000138.html

Lung Health and Wellness
The Respiratory System
Inside the Human Body
http://lung.ca/children/grades7_12/lung_health/index.html

Lungs and the Respiratory System
A Body Basics Article
TeensHealth
http://www.kidshealth.org/teen/asthma_basics/lungs/lungs.html