Tag Archives: alveoli

Alveoli SEM

An alveolus (plural: alveoli, from Latin alveolus, “little cavity”) is an anatomical structure that has the form of a hollow cavity. Found in the lung parenchyma, the pulmonary alveoli are the terminal ends of the respiratory tree, which outcrop from either alveolar sacs or alveolar ducts, which are both sites of gas exchange with the blood as well. (from Wikipedia)

Image from post-mitotic tumblr (link). Image by David Gregory and Debbie Marshall

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Alveoli TEM

The large open lesions represent alveoli, within the walls of the alveoli, thin-walled capillaries and the erythrocytes can be seen.

 Mouseover for labels.  image from Udel.edu

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Lung SEM

Alveoli and a terminal bronchiole can be seen in this scanning electron micrograph

Image source (link). Lung SEM low magnification. Image from Univ Delaware

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