What is the role of the nervous system in movement?

The role of the nervous system in movement is primarily to coordinate muscle contractions. The nervous system consists of the brain, spinal cord, and an extensive network of nerves that connect to muscles throughout the body. It is responsible for sending signals from the brain to the muscles, instructing them to contract and produce movement.

When a movement is initiated, the brain processes information about the desired action and sends electrical impulses through motor neurons to the appropriate muscle fibers. This precise coordination ensures that muscles work in harmony, allowing for smooth and controlled movements. Additionally, the nervous system also integrates sensory feedback from the muscles and joints to adjust movements in real time, contributing to balance and coordination.

The other options pertain to different physiological roles that are not primarily focused on the nervous system's contribution to movement. For instance, delivering oxygen to muscles is a function of the cardiovascular and respiratory systems, while burning calories during exercise relates to metabolic processes. Preventing muscle soreness is more connected to recovery and adaptation processes following physical activity. Thus, while all these systems interact during physical activity, the primary role of the nervous system is to coordinate muscle contractions to facilitate movement.