BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What nerve activates the muscles of facial expression and the lacrimal and salivary glands?
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Facial
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Vagus
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Accessory
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Optic
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Explanation:
Detailed explanation-1: -The facial nerve controls the muscles that help you smile, frown, wrinkle your nose, and raise your eyebrows and forehead. This seventh cranial nerve performs motor and sensory functions.
Detailed explanation-2: -The lacrimal nerve, from the ophthalmic branch of the trigeminal nerve provides sensory innervation to the gland. Parasympathetic secretomotor neurons stimulate the secretion of lacrimal fluid.
Detailed explanation-3: -CN VII provides preganglionic parasympathetic innervation to: Submandibular glands. Sublingual glands. Lacrimal glands.
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