Assertion: facial nerve's course | /r/CapableOf | turn through the mastoid
Facets:
value: posteriorly
type: MANNER
value: to pass
type: PURPOSE
Source sentences:
text: The facial nerve enters the labyrinth (labyrinthine segment), courses anteriorly in the temporal bone to the geniculate ganglion, turns posteriorly to pass beneath the lateral semicircular canal (tympanic segment) and then inferiorly to course through the mastoid (vertical segment), and exits the temporal bone via the stylomastoid foramen.