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DictionarySeemeatusEncyclopediaSeeinternal acoustic meatusmeatus acusticus internus
in·ter·nal a·cous·tic me·a·tus [TA] a canal beginning at the opening of the internal acoustic meatus in the posterior cranial fossa, passing laterally through the petrous portion of the temporal bone to end at the fundus, where a thin plate of bone separates it from the vestibule; it gives passage to the facial and vestibulocochlear nerves together with the labyrinthine artery and veins. Synonym(s): meatus acusticus internus [TA], internal auditory meatusmeatus (me-a'tus) plural.meatus [L.] A passageway or an opening. meatal (me-a'tal), adjectiveacoustic meatusThe opening to either the external or internal auditory canal. It can also be a synonym for either the external or internal auditory canal. meatus acusticus externusExternal auditory canal.meatus acusticus internusInternal auditory canal.external acoustic meatusExternal auditory meatus.external auditory meatusThe outer opening of the external auditory canal, or the canal itself. See: external acoustic meatus.internal acoustic meatusInternal auditory meatus.internal auditory meatusThe opening of the internal auditory canal into the cranial cavity located on the posterior surface of the petrous portion of the temporal bone, or the canal itself. Synonym: internal acoustic meatusmeatus nasi communisCommon nasal cavity on either side of septum, into which three meatus open.meatus nasi inferiorSpace beneath inferior turbinate or concha of the nose.meatus nasi mediusSpace beneath middle turbinate or concha of the nose.meatus nasi superiorSpace beneath superior turbinate or concha of the nose.meatus nasopharyngeusPosterior portion of nasal cavity, which communicates with the nasopharynx.urethral meatusExternal opening of the urethra. Synonym: urinary meatus; meatus urinariusmeatus urinariusUrethral meatus.urinary meatusUrethral meatus. |