Which cranial nerve supplies all the muscles of facial expression?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the City and Guilds Dental Nursing Block 2 Test. Use flashcards and multiple choice questions, each with hints and explanations, to prepare effectively. Get ready for your exam!

Multiple Choice

Which cranial nerve supplies all the muscles of facial expression?

Explanation:
The muscles of facial expression are innervated by the facial nerve. This nerve carries the motor fibers that move those facial muscles, including the forehead, around the eyes, the mouth, and the lower face, via its main branches (temporal, zygomatic, buccal, marginal mandibular, and cervical). Because all the muscles responsible for facial expression receive input from this nerve, it is the correct choice. The other nerves listed have different roles: one is primarily for vision, another handles taste and some pharyngeal muscles, and another controls most eye movements and eyelid opening—none of which supply the facial expression muscles.

The muscles of facial expression are innervated by the facial nerve. This nerve carries the motor fibers that move those facial muscles, including the forehead, around the eyes, the mouth, and the lower face, via its main branches (temporal, zygomatic, buccal, marginal mandibular, and cervical). Because all the muscles responsible for facial expression receive input from this nerve, it is the correct choice. The other nerves listed have different roles: one is primarily for vision, another handles taste and some pharyngeal muscles, and another controls most eye movements and eyelid opening—none of which supply the facial expression muscles.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy