What part of the nervous system is essential for it work properly?

The central nervous system (CNS) is essential for the nervous system to work properly. The CNS consists of the brain and spinal cord. It serves as the control center of the body, processing information, coordinating actions, and regulating bodily functions. The brain, located within the skull, is the primary decision-making center, responsible for higher cognitive functions such as thought, memory, language, and emotions. The spinal cord, extending from the brain, serves as a communication pathway between the brain and the rest of the body, transmitting sensory information and motor commands. Together, the brain and spinal cord form the CNS and are vital for the proper functioning of the entire nervous system.