Central Nervous System (CNS)

What is the Central Nervous System (CNS)? The central nervous system (CNS) is the portion of the nervous system comprising the brain and spinal cord.

What is the Function of the Central Nervous System?

The CNS is connected to the rest of the body through the peripheral nervous system (PNS). It receives information about the body and changes in the environment through the PNS, processes it, and responds to the stimulus through the PNS.

The spinal cord functions as: 

  • Conduction pathway for sensory information to the brain and motor pathways from the brain to the rest of the body.
  • Reflex center for quick responses to stimuli that do not require complex processing.

The brain is a complex neural network that controls most processes of the human body, from some of the most primitive to the most sophisticated. It is responsible for thought, behavior, emotions, memory, and regulation of body processes, such as movement, breathing, and maintaining body temperature in response to internal and external stimuli. 

Source: The Central Nervous System | SEER Training. (n.d.). https://training.seer.cancer.gov/anatomy/nervous/organization/cns.html