The Nervous System is a vast biological computing device formed by a network of grey matter regions, interconnected by white matter tracts and are divided into two broad classes, namely, the Central Nervous System (CNS) and Peripheral Nervous System (PNS).
The Central Nervous System comprises of the forebrain, midbrain, hindbrain and the Spinal Chord.
The Spinal Chord is responsible for sending signals from the brain to the different parts of your body to move and receive sensory information from the different parts of the body to the brain.
The Brain Steam sits at the bottom of the brain and at the top of the Spinal Chord and is responsible for relaying information to and from the brain and to and from the Spinal Chord.