The facial nerve provides motor innervation to the muscles of facial expression and inner ear, sensory (taste) innervation, as well as parasympathetic innervation to the parasympathetic ganglia.

Course

  • Begins from two parts:
    1. The nervus intermedius (consisting of special sensory and parasympathetic innervation)
    2. The motor part
  • As it passes through the internal acoustic meatus, it will form the geniculate ganglion (Latin: small knee, owing to the sharp angle formed within the internal acoustic meatus).
  • The intracranial branches of CN VII will form the greater petrosal, chorda tympani nerves and the nerve to stapedius muscle, while the "visible" facial nerve (the

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