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? produces tears, allows for taste, form facial expressions, saliva production
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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 provides motor innervation of facial muscles that are responsible for facial expression, parasympathetic innervation of the glands of the oral cavity and the lacrimal gland, and sensory innervation of the anterior two-thirds of the tongue.
Detailed explanation-2: -The muscles of facial expression are innervated by the facial nerve (cranial nerve VII), and the muscles of mastication are innervated by the mandibular division of the trigeminal nerve (cranial nerve V3).
Detailed explanation-3: -The greater petrosal nerve, derived from the facial nerve, supplies the parasympathetic autonomic component of the lacrimal gland, controlling the production of moisture or tearing in eyes.
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