![Pulmonary air-sac system in a bird.a, Latex injection (blue) of the... | Download Scientific Diagram Pulmonary air-sac system in a bird.a, Latex injection (blue) of the... | Download Scientific Diagram](https://www.researchgate.net/publication/7730012/figure/fig4/AS:267546427392026@1440799447993/Pulmonary-air-sac-system-in-a-birda-Latex-injection-blue-of-the-pulmonary-system-in-a.png)
Pulmonary air-sac system in a bird.a, Latex injection (blue) of the... | Download Scientific Diagram
![Annotated Illustration of diseased human alveoli. The alveoli are air sacs in the lungs, at the ends of the bronchioles, that allow the exchange of ca Stock Photo - Alamy Annotated Illustration of diseased human alveoli. The alveoli are air sacs in the lungs, at the ends of the bronchioles, that allow the exchange of ca Stock Photo - Alamy](https://c8.alamy.com/comp/2DHN6EN/annotated-illustration-of-diseased-human-alveoli-the-alveoli-are-air-sacs-in-the-lungs-at-the-ends-of-the-bronchioles-that-allow-the-exchange-of-ca-2DHN6EN.jpg)
Annotated Illustration of diseased human alveoli. The alveoli are air sacs in the lungs, at the ends of the bronchioles, that allow the exchange of ca Stock Photo - Alamy
![Flying birds possess a unidirectional air flow through the lungs and... | Download Scientific Diagram Flying birds possess a unidirectional air flow through the lungs and... | Download Scientific Diagram](https://www.researchgate.net/publication/281616988/figure/fig2/AS:669493407793160@1536631075727/Flying-birds-possess-a-unidirectional-air-flow-through-the-lungs-and-air-sacs-as-well-as-a.png)
Flying birds possess a unidirectional air flow through the lungs and... | Download Scientific Diagram
![The diagram illustrates the healthy trachea and air sacs of the human lungs highlighted with black lines for easy viewing. 8288533 Vector Art at Vecteezy The diagram illustrates the healthy trachea and air sacs of the human lungs highlighted with black lines for easy viewing. 8288533 Vector Art at Vecteezy](https://static.vecteezy.com/system/resources/previews/008/288/533/original/the-diagram-illustrates-the-healthy-trachea-and-air-sacs-of-the-human-lungs-highlighted-with-black-lines-for-easy-viewing-vector.jpg)
The diagram illustrates the healthy trachea and air sacs of the human lungs highlighted with black lines for easy viewing. 8288533 Vector Art at Vecteezy
![Diagram Showing The Pulmonary Alveolus (air Sacs) In The Lung Royalty Free SVG, Cliparts, Vectors, And Stock Illustration. Image 15915102. Diagram Showing The Pulmonary Alveolus (air Sacs) In The Lung Royalty Free SVG, Cliparts, Vectors, And Stock Illustration. Image 15915102.](https://previews.123rf.com/images/blueringmedia/blueringmedia1210/blueringmedia121000039/15915102-diagram-showing-the-pulmonary-alveolus-air-sacs-in-the-lung.jpg)