{"role":"assistant","content":"A neuron is a specialized cell that serves as the fundamental building block of the nervous system. Neurons are responsible for transmitting electrical and chemical signals throughout the body, which enables communication between different parts of the body and plays a critical role in everything from reflexes to complex processes like thinking and memory.\n\nKey features of neurons include:\n\n1. **Structure**: Neurons typically consist of three main parts:\n   - **Cell Body (Soma)**: Contains the nucleus and organelles, integrating signals from","refusal":null,"annotations":[]}