This video, we're going to be talking about the nervous system. So the nervous system is a complex network of neurons that conveys electrochemical information throughout the body and it has two divisions. First is the central nervous system, also known as the CNS, and then there's the peripheral nervous system, also known as the PNS for short. You can see the central nervous system is depicted in this image in blue and it is composed of the brain and spinal cord and this essentially functions as like a control center for the human body. You can think of it as like a literal headquarters up there.

Every single thought that you have, every emotion that you experience, memories, sensation, perceptions, motor commands, all of that is coming from your central nervous system. Now, we also have the peripheral nervous system and this is composed of nerves that are outside of or peripheral to the brain and spinal cord. Basically, parts of the nervous system that are outside of the CNS would be the PNS. The purpose of the PNS is essentially to connect the body to the brain and it is essential for both sensation and movement. You can see all these little purple nerves here in this image.

They're running down our arms into our hands, throughout our entire body, down our legs into our feet, and we're going to have sensory nerves that will basically convey sensory information up to our CNS basically saying, hey, there's some pain or pressure or whatever happening, and then your CNS can send a motor signal or a movement signal down the motor nerves of your arms and legs and say, hey. Let's pick up our foot. Let's move our hand, etc. So they kind of work together in that way. Now the central nervous system just is what it is, brain and spinal cord.

But the peripheral nervous system actually has several subdivisions, and we're going to talk about those in our next concept video. So I will see you there.