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The nervous system denoted as n s in the body can be categorized into two types.
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The central nervous system denoted as cns and the peripheral nervous system denoted as pns.
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Now the central nervous system contains the brain and the spinal cord in them.
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While the peripheral nervous system comprises all the other neurons of the body.
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So this peripheral nervous system can also be categorized into two.
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Two types broadly.
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One is the sensory neurons denoted as sn, well other is the motor neurons denoted as mn.
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Now the sensory neurons only senses all the stimuli that is obtained in the body internally or externally and this simuli is passed to the central nervous system denoted as cns through the nervous network.
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In the cns only the stimuli is red or it is interrupted and a response for the simuli is given by the central nervous system.
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So this response is transported to their respective organs with the help of the motor neurons.
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So all these neurons, that is the sensory neurons, the motor neurons and the other neurons of the body are usually covered by.
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A myelin shell denoted as ms...