Veja em o microvídeo (um tanto perturbador para uns) de um pulmão de gato sendo inflado

Veja em <http://goo.gl/kRhRUW> o microvídeo (um tanto perturbador para uns) de um pulmão de gato sendo inflado

Originally shared by Andres M. Trianon

Inflating a Cat Lung.
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Here, a set of cat lungs is inflated with a straw. Comprised of hundreds of millions of microscopic air sacks called aveoli, Mammalian lungs harbor air capacity that is difficult to believe unless seen. The color of the entire organ lightens into a soft pink, as each microscopic sac fills with air
http://imgur.com/gallery/Xb9nl8R

http://i.imgur.com/Xb9nl8R.gif