The upper third of the face is controlled by
A) the ipsilateral facial nerve.
B) the contralateral facial nerve.
C) both the ipsilateral and contralateral facial nerves.
D) both the ipsilateral and contralateral trigeminal nerves.

Question

Quizplus · Accepted Answer

The upper third of the face receives innervation from both the ipsilateral and contralateral facial nerves, allowing for some movement even if one side's facial nerve is damaged. This bilateral innervation is why forehead expression can often be preserved even in cases of unilateral facial nerve paralysis.

The Upper Third of the Face Is Controlled by