peripheral nervous system

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    nicole

    Cards (11)

    • what does the peripheral nervous system do
      transmits information to and from the central nervous system
    • what two systems does it contain
      the somatic nervous system
      the autonomic nervous system
    • the somatic nervous system
      important in movement, reflexes and control of conscious movement
    • somatic nervous system
      made up of 12 pairs of cranial nerves
      and 31 pairs of spinal nerves
    • what do sensory neurons do
      relay messages to the central nervous system
    • what do motor neurons do
      relay information from the central nervous system to other areas of the body
    • what process is the somatic nervous system involved in
      reflex actions without the involvement of the central nervous system
      allows the reflex to occur quickly
    • the autonomic nervous system
      important in the survival response and involuntary actions
      e.g. heartbeat and digestion
    • the two parts of the autonomic nervous system
      sympathetic
      parasympathetic
    • sympathetic division
      uses the neurotransmitter noradrenaline which has stimulating effects
    • parasympathetic division
      uses the neurotransmitter acetylcholine which has inhibiting effects
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