Behold the cynodont. (Sounds like: sign-uh-daunt.) Cynodonts gave rise to all living mammals about 250 million years ago. Or so. These...

This video from 1987 is fun to watch just to see how Jon Zahourek thinks—and observes. In less than a minute, he covers so much ground....

Before the fish was the tunicate—the marine invertebrate. The inner layer of the tunicate is a tube that moves water (and nutrients) in...

Keep moving! Good blood circulation is vital to health. And movement helps move blood. The heart gets a lot of the credit for...

No matter how far you go back in the history of human evolution—actually, in the history of all living organisms on planet Earth—there...

One thing Jon Zahourek routinely emphasizes is that a model of human anatomy is always close at hand. Yourself. It’s always there as a...

Limber. For an athlete, it’s an ideal state—right? Athletes need to limber up before a competition. But there’s a fine line between being...

Pulp. Goo. When he teaches, Jon Zahourek keeps it real. His verbiage swings from relatable imagery to the technical language of science....

Hang around here long enough and you’re going to hear one word quite a bit. System. In this clip from 1992, Anatomy in Clay® Learning...

The human thorax rotates. As bipeds, this is especially helpful when we run. The rotation helps moves our hips. One major key to all...

We can think of no better example of Jon Zahourek’s trademark excitement for all things anatomical than the last two seconds of this...

It doesn’t take much for us to dive into the history of a word. This video clip of Jon Zahourek poking around in the medullary cavity of...

Stop and think of all the joints in the human body. For that matter, any mammal. One place to study form and function is in how one bone...

We all have our favorite anatomical words. Just for the way it sounds, brachiator is one of ours. Brake—eee—ay—tor. It rolls off the...

Don’t judge the size or power of a muscle by the shape of its attachment. It’s a simple point that’s worth remembering. As Jon Zahourek...