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Pulmonary emphysema
 
Note that the alveoli (air spaces) in this slide are much larger than in the slide of normal lung. The functional efficiency of this lung is much reduced as compared to normal.   

Emphysema (40X2.0)                                                                      Normal lung (40X2.0) 
    
Destruction of tissue leaves little surface area, few               Much normal tissue creates large surface area
capillaries, and large air spaces. Large vessel at lower         with many capillaries, many small air spaces. Large
right                                                                                               vessel at extreme left, large airway at lower right

Emphysema (100X2.0)
                                                                     Normal lung (100X2.0)
     
Destruction of tissue leaves little surface area, few                Much normal tissue creates large surface area
capillaries, and large air spaces                                                  with many capillaries, which are filled with
                                                                                                         RBCs (red cells)

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Copyright 2020: Augustine G. DiGiovanna, Ph.D., Salisbury University, Maryland

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