Which nerve is responsible for carrying the afferent signal in the corneal reflex?

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Nerve X (Vagus nerve)Seventh cranial nerve (Facial nerve)Fifth cranial nerve (Trigeminal nerve)Ninth cranial nerve (Glossopharyngeal nerve)None of the above

Explanation

The afferent limb of the corneal reflex is transmitted by the trigeminal nerve (cranial nerve V), which detects the sensory input from the cornea. The facial nerve (cranial nerve VII) carries the efferent signal that causes eyelid closure.