INBDE (Integrated National Board Dental Examination) Practice Exam 2025 - Free Practice Questions and Study Guide

Question: 1 / 1180

The stylopharyngeus is innervated by which cranial nerve?

VII

VIII

IX

The stylopharyngeus muscle is innervated by the glossopharyngeal nerve, which is cranial nerve IX. This muscle plays a crucial role in swallowing by elevating the pharynx and larynx during the swallowing process.

Options A, B, and D are incorrect:

- Cranial nerve VII (Facial nerve) is responsible for innervating the muscles of facial expression and taste sensation from the anterior two-thirds of the tongue.

- Cranial nerve VIII (Vestibulocochlear nerve) is responsible for transmitting signals related to hearing and balance from the inner ear to the brain.

- Cranial nerve X (Vagus nerve) innervates muscles in the pharynx and larynx that are involved in swallowing and phonation.

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