Human Nervous system

Human Nervous system

1. CNS (central nervous system)

   • Brain
   • spinal cord
   • stimulus
     • sensor
       • sensory neurons
         • brain & spinal cord
           • motor neurons
             • effector cells
               • Reaction

2. PNS (peripheral nervous system)

   • ANS (automatic nervous system)
     • sympathetic nervous system
     • parasympathic nervous system
   • VNS (voluntary nervous system)
     • sensory nerve cells
     • motor nerve cells

3. Neurons

   • Cell Body (soma)
     • Extentions
       • Dendrites
       • Axon
         • Axon hillock
         • insulating sheet
           • synaptic terminal
             • Synapse
           • continius conduction
           • saltatory conduction
     • nucleus

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