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startofdata[Nerves and Neurones]Central Nervous System,The brain and spinal cord.Peripheral Nervous System,Receptors and Effectors at peripherals.Stimulus,A change in the environment.Receptor,Specilised cell that converts a stimulus to an Action Potential.Response,Muscle or Gland which follows an impulse.Sensory Neurone,Receptor to CNS.Motor Neurone,CNS to effector.Relay Neurone,Carries Impulse through sub conscious CNS.;[Action Potentials]Depolarisation,Resting to Action Potential +40mV.Repolarisation,Action Potential to Resting.;endofdata