The Nervous System

• What are the 2 main sub-systems of the nervous system?

  Central nervous system and peripheral nervous system
• What is the peripheral nervous system (PNS) made up of?

  Millions of neurones which carry electrical impulses to and from the CNS
• What are the 2 sub-divisions of the PNS?

  1, The Autonomic nervous system (ANS) = parasympathetic and sympathetic nervous system 2, The somatic nervous system (SNS)
• What is the role of the somatic nervous system?

  To control voluntary movements and deals with skeletal muscles
• What is the role of the autonomic nervous system?

  To control involuntary movements and deals with smooth muscles and glands
• What is the autonomic nervous system sub-divided into?

  Sympathetic and parasympathetic systems
• What is the role of the sympathetic nervous system?

  To increase bodily activities and mobilize body for fight or flight
• What is the role of the parasympathetic system?

  Restores the body to resting levels and conserves energy
• What is the role of the brain and the spinal cord in the CNS?

  1, Brain = governs our conscious awareness and coordinates sensation, intellectual and nervous activity 2, Spinal cord = receives information to and from brain and responsible for reflex actions
• What is the central nervous system made up of?


  1, Brain 2, Spinal cord