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Terrestrial Origins and Evolution
gators
01/19/10

 

Computerized tomographic (CT) X-ray images of side and top views of a 24-pound American alligator, with 3-D renderings of the bones and of airways or bronchi within the lungs. In a gator's lungs, air flows from the first-tier bronchi through second-tier bronchi (blue), then through tube-like third-tier parabronchi (not shown) and then back through other second-tier bronchi (forest green).
Photo Credit: C.G. Farmer & Kent Sanders



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