Respiratory tree drawings

Tomorrow we’re going to be talking about the histology of the respiratory system. It’s kind of like the GI tract, in a way, in that it consists of a series of tubes that have different histologic features. So it’s pretty easy to break down into parts (bronchi, bronchiole, etc.) and summarize.

I like to make drawings to summarize things like this – and I thought I’d share this one with you in case you find it useful. It shows how the wall of the respiratory tree changes as you go from bronchi to alveoli. There are three versions, so you can use it fully labeled, partially labeled, or unlabeled, however it suits you best. Let me know if you find it useful – if so, I’ll make more 🙂


Labeled with passageways only:

Fully labeled: