DIVISIONS OF THE NERVOUS SYSTEM

• NERVOUS SYSTEM

  
• CNS


  • BRAIN = receives and processes sensory information, initiates responses, stores, memories generates thoughts and emotions
  • SPINAL CORD = conducts signals to and from the brain, controls reflex activities
• PERIPHERAL NERVOUS SYSTEM (PNS)

  • MOTOR NEURONS = CNS to muscles and glands
  • SENSORY NEURONS = sensory organs to CNS
• MOTOR NEURONS

  • SOMATIC NERVOUS SYSTEM = controls voluntary movements
  • AUTONOMIC NERVOUS SYSTEM = controls involuntary responses
• AUTONOMIC NERVOUS SYSTEM 


  • SYMPATHETIC DIVISION = "fight or flight"
  • PARASYMPATHETIC DIVISION = "rest or digest"