What is the primary function of sensory nerves?

The primary function of sensory nerves is to convey signals from sensory receptors to the brain. These nerves are responsible for transmitting information about the external environment or the body's internal state to the central nervous system. Sensory nerves pick up stimuli such as light, sound, touch, temperature, and pain from sensory receptors located throughout the body, and then send this information to the brain for processing and interpretation. This process allows the brain to understand and respond appropriately to different stimuli, facilitating awareness and interaction with the environment.

In contrast, signals to muscles are primarily carried by motor nerves, which focus on executing movements rather than transmitting sensory information. Connecting to the central nervous system is a broader function that includes both sensory and motor nerves, but it does not capture the specific role of sensory nerves themselves. Lastly, controlling involuntary actions is typically the role of the autonomic nervous system, which operates independently of sensory nerves and involves regulation of bodily functions without conscious thought.