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What is ANS ? Explain the components of ...

What is ANS ? Explain the components of ANS.

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Autonomic neural system comprises the following components:
Preganglionic neuron: Whose cell body is in the brain or spinal cord, its myelinated axon exits the CNS as part of cranial or spinal nerve and ends in an autonomic ganglion.
Autonomic ganglion: Consists of axon of preganglionic neuron and cell bodies of postganglionic neuron.
Postganglionic neuron: Conveys nerve impulses from autonomic ganglia to visceral effector organs.
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