Answer: Neuron.
- A Neuroglia
- B Axon
- C Neuron
- D Synapse
Correct answer: C. Neuron
Explanation: The neuron is the basic structural and functional unit of the nervous system. It transmits electrical signals.
Structure of a neuron. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.