Which function is NOT a role of the nervous system as related to movement?

The function that is not a role of the nervous system in relation to movement is the development of muscle mass and strength. While the nervous system plays a critical role in controlling and coordinating movements, including recruiting muscles and managing them based on sensory feedback, the actual process of developing muscle mass and strength is primarily influenced by factors such as physical training, nutrition, and hormonal responses.

The nervous system is responsible for initiating and regulating movements through the communication of signals between the brain and muscles. It utilizes sensory feedback to adapt movements in real-time, ensuring that actions are performed efficiently and safely. Furthermore, it employs innate patterns and learned behaviors to guide the execution of movements. However, the hypertrophy of muscles and the increase in strength are adaptations that occur predominantly due to the physical demands placed on the muscle fibers during resistance training and other forms of physical exertion, rather than being a direct function of the nervous system itself.