Which of the following statements about the facial nerve is incorrect?

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It provides motor innervation to the muscles responsible for facial expressions.It lacks any sensory functions.In upper motor neuron lesions, the eyelid muscles remain unaffected.It originates from the second pharyngeal arch.It controls the stapedius muscle in the middle ear.

Explanation

The facial nerve does supply motor branches to the muscles of facial expression, originates from the second pharyngeal arch, and eyelid muscles are typically spared in upper motor neuron lesions. However, it does have sensory components, including taste sensation from the anterior two-thirds of the tongue and sensation from parts of the ear. Therefore, the statement that it has no sensory component is incorrect.