Ear Diagrams 7
7 - 792 - The right tympanic cavity after the further removal of bone. (Enlarged about two-thirds.) The carotid, facial, and musculotubar canals and the mastoid cells have been opened and the external auditory meatus completely removed. * = Opening of the cavity of the pyramidal eminence. ** = Cavity of the pyramidal eminence for the stapedius.