Which term describes the basic cellular unit of the nervous system?

• A. Myelin Sheath
• B. Attachment
• C. Dendrite
• D. Neuron

Answer: (D)

The basic cellular unit of the nervous system is a neuron. Neurons are specialized for receiving, processing, and transmitting information throughout the body. They communicate signals via electrical impulses that travel along the axon and are passed to other neurons at synapses. Dendrites are the branching parts that receive input from other neurons, while the myelin sheath insulates and speeds up signal conduction along the axon. Attachment isn’t a term used to describe neural structure. So the neuron best fits as the fundamental cellular unit.