BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which cranial nerve is responsible for the taste in the posterior 1/3 of the tongue, and what kind of taste is it?
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Facial; sweet/salty
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Facial; sour/bitter
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Glossopharyngeal; sweet/salty
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Glossopharyngeal; sour/bitter
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Explanation:
Detailed explanation-1: -As stated above, the glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle, which is responsible for elevating the pharynx and larynx.
Detailed explanation-2: -The glossopharyngeal nerve as noted above is a mixed nerve consisting of both sensory and motor nerve fibers. The sensory fibers’ origin include the pharynx, middle ear, posterior one-third of the tongue (including taste buds); and the carotid body and sinus.
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