| 1. | As in the sympathetic nervous system, preganglionic or presynaptic neuron.
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| 2. | A preganglionic fibre may synapse to 15-20 postganglionic fibres.
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| 3. | It also supplies preganglionic parasympathetic fibers to several head and neck ganglia.
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| 4. | Preganglionic parasympathetic fibres exit the geniculate ganglion as the greater petrosal nerve.
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| 5. | They contain both preganglionic parasympathetic fibers as well as visceral afferent fibers.
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| 6. | Preganglionic parasympathetic fibres arise in the superior salivary nucleus of the pontine tegmentum.
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| 7. | These parasympathetic preganglionic fibers come from the facial nerve ( CN VII ).
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| 8. | Postganglionic cell refers to parasympathetic neurons which receive information from the preganglionic fibers.
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| 9. | The preganglionic parasympathetic fibres originate in the inferior salivatory nucleus of the glossopharyngeal nerve.
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| 10. | Now the preganglionic fiber is restimulated again.
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