HEAD NECK
ROOT OF NECK
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following muscles of the throat are innervated via the vagus nerve (i.e. NOT innervated by the glossopharyngeal nerve)? 1. Superior Pharyngeal2. Stylopharyngeus3. Palatopharngeus4. Middle Pharyngeal5. Inferior Pharyngeal
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4 only
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1, 3, 4, & 5
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1, 2, & 3
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2 only
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Explanation:
Detailed explanation-1: -The vagus nerve innervates the crural area of the diaphragm (where the esophagus passes or esophageal hiatus). The tenth cranial nerve innervates the suspensory muscle of the duodenum or musculus suspensorius duodeni.
Detailed explanation-2: -During swallowing, these muscles act to shorten and widen the pharynx. They are innervated by the pharyngeal branch of the vagus nerve (CN X) with the exception of the stylopharyngeus muscle which is innervated by the glossopharyngeal nerve (CN IX).
There is 1 question to complete.