{"role":"assistant","content":"A neuron is a specialized cell that is the fundamental building block of the nervous system. Neurons are responsible for transmitting signals throughout the body, allowing for communication between different parts of the nervous system and coordinating responses to stimuli. \n\nKey features of neurons include:\n\n1. **Structure**: Neurons have a unique structure that consists of three main parts:\n   - **Cell body (soma)**: Contains the nucleus and organelles, where basic cellular functions occur.\n   - **Dendrites**","refusal":null,"annotations":[]}