The Central Nervous System is composed of the brain and spinal cord, which effectively controls and influences the activity and functions of the body and mind. It’s main responsibility is to process information and determine an appropriate response.
The brain is very much like a central computer. It effectively interprets information that comes through our five senses as well as from internal organs such as the stomach.
The spinal cord is very much akin to a communication highway that allows for information to travel freely from the brain to the body and vice versa.