Is sensory input a function of the nervous system?

Yes, sensory input is a fundamental function of the nervous system. It involves the detection of stimuli from the environment through sensory receptors, which then transmit information to the brain for processing. This allows the organism to perceive and respond to various sensory modalities, such as sight, sound, touch, taste, and smell. Ultimately, sensory input is crucial for survival and interaction with the surroundings.