{"role":"assistant","content":"A neuron is a specialized cell that serves as the fundamental building block of the nervous system. It is responsible for transmitting and processing information through electrical and chemical signals. Neurons are classified into three main types:\n\n1. **Sensory Neurons**: These neurons transmit sensory information from sensory receptors to the central nervous system (CNS), where it is processed.\n\n2. **Motor Neurons**: These neurons convey signals from the CNS to muscles and glands, triggering responses such as movement or secretion.\n\n","refusal":null,"annotations":[]}