26. The preganglionic fibres and the postganglionic fibres are a part
of-----
1. peripheral nervous system
2. central nervous system
3. autonomous nervoussystem
4.endocrine system
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Preganglionic nerves from the spinal cord create a synapse at one end of the chain ganglia and the postganglionic fiber extends to an effector, typically a visceral organ, in the thoracic cavity.
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