This slide shows a section  taken from the lung.  Note that the bulk of this organ is composed of simple squamous epithelial cells that facilitate rapid gas exchange between the air sacs (alveoli) and surrounding blood vessels (not shown).  Observe  how these  cells appear different when viewed from the surface as opposed to the side.

This site was last modified May 10, 2002.    NOTE: These pages are best viewed at a screen size of 800 X 600 pixels.

The address of A/P Lab is:  http://bioweb.uwlax.edu/aplab/      Direct comments or questions to gillis.rick@uwlax.edu