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Tuesday, November 8th 2011

Segments of the Facial Nerve

List the segments of the facial nerve.

Segment Course
Cisternal From pontomedullary junction to IAC
Meatal Through IAC
Labyrinthine Fundus of IAC to geniculate ganglion in the facial hiatus
Tympanic Distal to the geniculate ganglion to the pyramidal eminence
Mastoid Pyramidal eminence to stylomastoid foramen
Extratemporal Distal to the stylomastoid foramen to the parotid plexus where the nerve enters the patotid gland and splays out