| 11. | This is due to the number of synapses formed by the preganglionic fibers with ganglionic neurons.
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| 12. | The enhanced ciliospinal reflex in asymptomatic patients with cluster headache is due to preganglionic sympathetic mechanisms.
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| 13. | Preganglionic sympathetic neurons are located in the spinal cord, at the thorax and upper lumbar levels.
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| 14. | The test is the following : First stimulate the preganglionic fiber and notice the response that appears.
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| 15. | The sacral sympathetic nerves contain a mix of preganglionic and postganglionic sympathetic fibers, but mostly postganglionic.
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| 16. | The activity of autonomic ganglionic neurons is modulated by preganglionic neurons located in the central nervous system.
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| 17. | The first synapse ( preganglionic neuron to postganglionic neuron ) is mediated by nicotinic receptors activated by acetylcholine.
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| 18. | The remaining preganglionic fibers continue as the mixed facial nerve proper as it extends through the facial canal.
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| 19. | The greater petrosal nerve, which carries preganglionic parasympathetic fibers, emerges from the anterior aspect of the ganglion.
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| 20. | Because it is innervated by preganglionic nerve fibers, the adrenal medulla can be considered as a specialized sympathetic ganglion.
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