Structure of Neurons A neuron is the fundamental unit of the nervous system, responsible for transmitting and processing information through electrical and chemical signals. Neurons have specialized structures for receiving, integrating, and sending signals. 1. Parts of a Neuron a. Cell Body (Soma) b. Dendrites c. Axon d. Myelin Sheath e. Nodes of Ranvier f. Axon Terminals (Synaptic Knobs) 2. Types of Neurons Based on Structure 3. Types of Neurons