Respiratory tree drawings

Thought I’d share a drawing with you guys in case it helps. It’s a better version of the one I made in class showing how the wall of the respiratory passageways 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:



Quick video on stomach vs. small intestine

When we talked about the GI tract, I mentioned that when I was first learning this stuff as a student, I got hung up on trying to tell apart stomach and small intestine. They both have glands at the bottom and other structures (pits in the stomach, villi in the small intestine) on top…and I had a hard time visualizing how they were different.

So I made a short video explaining the difference. I think it’s easier to understand if you can see someone drawing on the pictures. So here it is – I hope if some of you had the same problem that this will solve it!

Exam room change tomorrow!

I emailed this to the class already, but just so it’s posted in all the places…our exam tomorrow will be in two rooms: 2-690 and 1-450 Moos. So we don’t all end up in one room, we’ll have people with last names starting with A-L in room 2-690, and people with last names starting with M-Z in room 1-450. The exam will start at 1 and end at 3. Let me know if you have any questions!

How to study vessels

Q. I am having a hard time memorizing and knowing the differences and characteristics between the types of arteries/veins. Is there a way to approach this?

A. I would organize the information in a table something like this, focusing on the main differences between the different vessels. 

It would be overwhelming to try to memorize each layer for each vessel, as they tend to be very similar – but if you focus on the features that are unusual, that will make it more memorable and meaningful. I filled in a couple rows to give you an idea of what I’d focus on.