The brow's motor nerves descend from the facial nerve. They arise from the lower part of the pons at the base of the brain stem and emerge on the sides of the face. The motor fibers send impulses to muscles for facial expressions. The facial nerves from the brow to the throat under the chin include: (1) the temporal nerve, (2) the zygomatic nerve, (3) the buccal nerve, (4) the facial nerve, (4) the posterior auricular nerve, (5) mandibular nerve, and (6) the cervical nerve.
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