The central nervous system receives sensory information about its internal and external conditions from a number of different specialised cells called receptors.

The role of receptors is sensory reception. That means obtaining information obout its locality and sending that information to the CNS.

The role of the CNS is sensory perception. Perception is when the brain pieces together all the nerve impulses it receives, building a picture of the surroundings. From this point the brain can choose…


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