Globio
Glossopedia: Noses
Some are cold and wet. Others are long and droopy. Some are so sensitive they can detect a drop of blood in 94 liters of water. They're noses, a scent-sational sensory organ.
Akron Children's Hospital
Akron Children's Hospital: Kidshealth: When Sinuses Attack
Sinuses are hollow spaces in your head that can fill with mucus when you're all stuffed up. Find out more in this article for kids.
Inner Body
Innerbody: Nasal Passages
This site from Innerbody.com provides a general overview of how the human nasal passages work. A second page illustrates the use of the nasal cavity with animation.
Inner Body
Innerbody: Nasal Passages
Describes the anatomy of the nasal passages. Explains how these structures function in the process of breathing and smell.