An annual health check-up of a 40 year old woman revealed hyper secretion of norepinephrine from her suprarenal medulla. Which of the following types of nerve fibers are most likely over stimulated?
a) Preganglionic sympathetic
b) Preganglionic parasympathetic
c) Postganglionic sympathetic
d) Postganglionic parasympathetic
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d) Postganglionic parasympathetic is I think correct
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Answer:
perganglionic parasympathetic
Explanation:
parasympathetic stimulation increases salivary secretion of fluid.
Preganglionic parasympathetic neurons reside in the inferior salivary nucleus in the medulla and travel over the glossopharyngeal nerve, or cranial nerve IX. These synapse on cells in the otic ganglion, where the postganglionic fibers join cranial nerve V to travel to the parotid gland. Parasympathetic stimulation of the parotid gland increases its rate of saliva secretion
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