 All right, our first theme today is probably the theme that is the most significant, relevant, and repetitive theme that we're going to see this semester. If you do nothing more in anatomy than take notes, study your notes, and then ask yourself every day what examples of the theme structure determines function did we see today in this course? You actually will come out of the course with a really deep and meaningful and powerful understanding of human anatomy. So structure determines function seems really straightforward and hopefully you're like, oh yeah, the study of structure, hello, seriously, the study of structure is, that is by definition, the study of anatomy. Now, because structure determines function, the study of function is the study of physiology. Physiology. Because structure, anatomy, determines function, physiology, you cannot separate these two concepts. We are in a human anatomy course, but we absolutely will be talking about function or physiology. You will then take a human physiology course, which is an awesome class, and you won't be able to talk about the function of the human body without talking about the anatomy. So yes, we separate out the classes here at College of the Redwoods. Many programs do not separate out the classes, and I prefer it this way, but I think probably everybody prefers the way that they do it. This theme, I'm going to bring it up often, and hopefully you will bring it up often in your brain as well. Okay, pretty straightforward. We're going to see it every day. Let's do the next theme.