Page 677 - Atlas of Histology with Functional Correlations

FIGURE 17.15 ■ Respiratory bronchiole, alveolar duct, and lung alveoli. Stain:
hematoxylin and eosin. Low magnification.

FIGURE 17.16 | Lung: Terminal Bronchiole,

Respiratory Bronchiole, Alveolar Ducts, Alveoli,

and Blood Vessel

This photomicrograph of the lung shows the smallest air-conducting passage, the
terminal bronchiole (7) that gives rise to thinner respiratory bronchioles (3),
characterized by numerous alveoli (2). Each respiratory bronchiole (3) gives rise

to an alveolar duct (1, 4, 8) that continues into the alveolar sacs (5). The
terminal bronchiole (7) and the adjacent blood vessel (6) are surrounded by the
alveoli (2).

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