Normal Function of the Central Nervous System

The central nervous system is composed of the brain and spinal cord. The brain receives sensory information from the nerves that pass through the spinal cord, as well as other nerves such as those from sensory organs involved in sight and smell. Once received, the brain processes the sensory signals and initiates responses. The spinal cord is the principle route for the passage of sensory information to and from the brain. (answers.com)

1. Brain
2. Central Nervous System (Brain to Spinal Cord)
3. Spinal Cord