Okay. So the nervous system has a lot going on, right? A lot of divisions. So we have a nice little flowchart here where we're going to kind of map out how all of these divisions are organized.

So we have this kind of the general label of the nervous system up top, and we know that the nervous system has two main divisions, and I can see that this one over here has a bunch of little branches, and this one does not which tells me that this one must be the central nervous system. Remember that the central nervous system is just the brain and spinal cord? That one is super easy. And then the peripheral nervous system or the PNS, which is comprised of nerves outside the brain and spinal cord, has all those little divisions. So starting off with the peripheral nervous system, we have 2 main divisions, our somatic nervous system and our autonomic nervous system, and the somatic nervous system, remember, is going to be in charge of voluntary movement.

And in contrast, the autonomic nervous system is in charge of those automatic or involuntary movements, right? Reflexes, movement of your gut, things like that that you have no control over. And then the autonomic nervous system is further divided into 2 divisions. We have our parasympathetic division and our sympathetic division, and our sympathetic division is basically our fight or flight response.

That division will become more dominant when we are, you know, engaged with a stimulus or threatened or stressed, and in contrast, the parasympathetic division becomes more dominant when we are relaxed and at rest, and so we sometimes call this our rest and digest system. Alright. So that is the organization of the nervous system, and I will see you guys in the next one. Bye-bye.