What do sensory neurons primarily do in the nervous system?

Sensory neurons have a crucial role in the nervous system as they are specifically responsible for transmitting sensory information from the periphery to the central nervous system (CNS). They detect stimuli from both internal and external environments, such as light, sound, temperature, and pressure, and then convert this sensory input into electrical signals.

These signals travel through the sensory neurons and reach the CNS, where they are processed, allowing the body to respond appropriately to different stimuli. This function is vital for sensation and perception, ensuring that the organism can react to environmental changes effectively. By bringing messages or signals to the CNS, sensory neurons facilitate the initial stages of the nervous response, making them essential for survival and interaction with the environment.