So the peripheral nervous system system is further divided into the autonomic nervous system and the somatic nervous system. So in this lecture, we're going to focus on the somatic nervous system. Now, the somatic nervous system consists of two divisions. We have the motor division that consists of only motor neurons also known as epharic neurons and we have the sensory division which consists of only sensory neurons also known as Afaric neurons. Now recall that a motor neuron is basically a neuron that accepts an electrical signal from the central nervous system and sends it away to some type of target organ gland, muscle tissue, and so forth. While the sensory neuron picks up that electrical signal from some type of outside stimulus and sends that electrical signal to the central nervous system where it's integrated as well as processed.