Nervous System

• subdivisions of the nervous systems

  • CNS
  • PNS
• What is the CNS made of

  • Brain
  • Spinal chord
• What is the PNS made of

  • ANS
  • SNS
• What neurone(s) are found in the CNS

  Relay
• What neurone(s) are found in the PNS

  Sensory and motor
• What is the ANS

  Involuntary system independent of conscious control

  • E.g blinking

  stimulates smooth muscle, cardiac muscle and glands
• what is the SNS

  voluntary system under conscious control

  carries impulses to skeletal muscle
• What are the 3 types of muscles

  1. Skeletal
  2. Cardiac
  3. Smooth
• What are the 2 subdivisions of the ANS

  1. Sympathetic Nervous System
  2. Parasympathetic Nervous System
• What does the Sympathetic Nervous System do

  Preps body for fight or flight

  • E.g increase heart rate
  • Increase ventilation
• What does the Parasympathetic Nervous System do

  Preps body for rest and digest

  • E.g conserving energy
  • Sleeping