The Respiratory System - How the Lungs Work

Macrophages are white blood cells that clean the lungs.


Alvi the Alveolus appears courtesy of the American Lung Association in Wisconsin.

All other illustrations by Tom Rolain, Medical Illustrator.

Text and character poems written by Tom Rolain.

Photo micrographs of lung tissue and photograph of the resin cast of the human lungs scanned and colorized from
"The Pathway for Oxygen" by Ewald R. Weibel, M.D.

Electron micrographs of lung tissue and macrophage scanned and colorized from
"Tissues and Organs: a text atlas of scanning electron microscopy" by Richard G. Kessel and Randy H. Kardon

Photographs of lung tissue (healthy and smoking) from the University of Wisconsin-Madison medical photographs archive.



This website was launched in April 2001 and it originally contained Flash files. The Flash files were replaced by the slide shows on 01/29/20. Unfortunately, all the animation contained within the Flash files has been eliminated. This change was made because Google is no longer indexing websites that contain Flash.