Lecture 13.4. The avian lung.

[@leryngorlitsky189]

I spent all day trying to understand the bird lung and was about to give up until I saw this video. Thank you so much!

[@macrotermiteman]

I'm so glad it helped! Thanks for letting me know. Best, Scott Turner

[@jenniferlatzgo5486]

Thank you! This was very helpful

[@macrotermiteman]

I'm glad you found it helpful! Scott Turner

[@ksdogg]

Thanks for this explanation as I am studying zoology diploma. A while ago I did see a video of Michael Denton mention the avian lung as having no observable intermediate modifications in evolution that lead to it. How do you think it developed? And are there even any similar structures that could have lead to parabronchi much less the whole system?

[@macrotermiteman]

Bird's bones have air-filled structures within them. This is what makes birds' bones hollow, rather than filled with marrow like mammals' bones. The air sac system and parabronchi are probably derived from those.