Fig. 5.8 Effects of aging on alveoli: (a) young alveoli. (b) old alveoli. (Source of image below. Used with permission.)

 

     

 

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Source of image. Used with permission.

 

https://commons.wikimedia.org/wiki/File:Human_respiratory_system-NIH.PNG

https://commons.wikimedia.org/wiki/File:Human_respiratory_system-NIH.PNG

 

Description     English: Diagram of the human respiratory system.

Date                   20 February 2013, 12:00:33

Source              http://www.nhlbi.nih.gov/health/health-topics/topics/hlw/system.html

Author              United States National Institute of Health: National Heart, Lung and Blood Institute

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Modified: A.G. DiGiovanna

Obscured interalveolar septa