The Central Nervous System

• What is the nervous system?

  A specialised and complex network of nerve cells in our body, which is our primary communication system
• What are the two main function of the nervous system?

  • Collects, Processes and responds to information in the environment
  • Coordinates the working of different organs and cells in the body
• What are the two main subsystems?

  Central Nervous System and Peripheral Nervous System (CNS + PNS)
• What is a Neuron?

  • A basic unit of the nervous system, communicates by transmitting signals electrically and chemically
  • May vary in size but have the same structure
• What is the Spinal Cord?

  • A tube like structure extension of the brain, connected via the brain system
  • Responsible for reflex actions
  • Passes messages from the PNS to brain
• What is the Brain?

  • Source of our consciousness and where decision making takes place
  • Divided into two hemispheres