What parts are involved in activity of nervous system?

The nervous system primarily consists of the brain, spinal cord, and peripheral nerves. The brain processes and interprets sensory information, while the spinal cord acts as a conduit for signals between the brain and the rest of the body. Peripheral nerves extend from the spinal cord to various body parts, facilitating communication and coordination of bodily functions. Additionally, neurons and glial cells play crucial roles in transmitting signals and supporting neural function.