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.

Exam 2 review Kahoots

Here are all the Kahoots that cover material on Exam 2. Please note that the questions in Kahoot #1 are HARDER on average than the exam questions will be. I purposely made these Kahoot questions harder because I wanted them to spark discussion as we went through them in class. I think to really get the most out of an in-class Kahoot, there should be something about the question that makes you think a little more deeply about the material and discuss why each answer is right or wrong. Otherwise, it’s just memorization-type thought, which you can just as easily do at home on your own. So the questions on exam 2 will be similar in type and depth to the questions on exam 1.

Kahoot #1: Multisystem review (28 questions, covers everything except the endocrine system). This is the one we did in class yesterday. There were two questions (questions 5 and 11) that had more than one correct answer; those have been fixed.

Kahoot #2: Multisystem review (6 questions, Jumble style, covers everything except blood and the endocrine system)

Kahoot #3: Endocrine system (5 questions)

Kahoot #4: Cardiovascular system (8 questions)

Kahoot #5: Blood, hematopoietic system, lymphoid system (15 questions)

Spring water goddess

When we were going through the lymphoid system lecture, I mentioned that I’d tell you about the derivation of the word lymph.

It turns out that lymph is a combination of a couple different words: the Latin lumpæ, meaning water, and the Greek nymphe, meaning spring goddess. The resulting word – lympha in Latin, lymphe in French – means clear water or a goddess of water.

I just love this so much. First of all, lumpæ sounds gross, and I wouldn’t want to have to deal with that word all the time. Second, we now have an accurate description (lymph does look like clear water) overlaid with a lovely, delicate image (spring water goddess). I mean, what more could you want?

Now every time I hear lymphatic, or lymphocyte, my brain will conjure up something like this:

This is Persephone, the Greek goddess, bringing spring to the frozen tundra.