part of part of Homo sapiens temporal bone bone foramen internal auditory meatus of petrous part of temporal bone 2026-03-19T00:00:00Z A bone foramen opening on the posterior surface of the petrous part of the temporal bone, transmitting the facial nerve (CN VII), the vestibulocochlear nerve (CN VIII), and the labyrinthine artery from the posterior cranial fossa into the internal acoustic canal. Its fundus is divided into compartments by the transverse crest and Bill's bar. David Osumi-Sutherland