part of part of contributes to morphology of conduit for facial nerve vestibulocochlear nerve internal ear anatomical conduit internal acoustic meatus The internal auditory meatus (also internal acoustic meatus, internal auditory canal, and internal acoustic canal) is a canal in the petrous bone of the temporal bone of the skull that carries nerves from inside the cranium towards the middle and inner ear compartments namely cranial nerve VII and cranial nerve VIII. Wikipedia:Internal_auditory_meatus Alternate def: The internal acoustic meatus (or internal auditory meatus ) is an opening on the medial surface of the petrous temporal bone. It is through this passageway that the facial nerve (cranial nerve VII) and vestibulocochlear nerve (cranial nerve VIII) pass to reach their sites of innervation. The vestibulocochlear nerve divides at the internal acoustic meatus to continue as separate vestibular and cochlear components. [MURDOCH:908] porus acusticus internus UBERON:0011859 internal auditory meatus FMA:53163 UMLS:C0149591 internal auditory canal internal acoustic meatus NCIT:C95443 internal acoustic canal SCTID:264484004