Question

multiple choice question
which nerve innervates the salivary glands and the muscles responsible for facial expression?

• vestibulocochlear nerve (cn viii)
• facial nerve (cn vii)
• hypoglossal nerve (cn xii)
• trochlear nerve (cn iv)

Explanation:

To solve this, we analyze each option:

• Vestibulocochlear nerve (CN VIII) is for hearing and balance, not for salivary glands or facial muscles.
• Facial nerve (CN VII) innervates facial expression muscles and salivary glands (submandibular, sublingual, and some parotid).
• Hypoglossal nerve (CN XII) controls tongue muscles, not related here.
• Trochlear nerve (CN IV) controls eye movement, not relevant.

Answer:

B. Facial nerve (CN VII)