A text-book of the diseases of the ear and adjacent organs . l; c, Section of the mem-brana tympani, of the handle of the malleus, and of the posterior pouch ; d, Pro-montory ; e, Ostium tymp. tubae ; /, Stapes in connection with the inferiorextremity of the long process of the incus and of the tendon of the stapedius;g, Mastoid process ; h, Cochlea ; i, Vestibule ; k, Carotid canal. wall of the cavity, on the other hand, is bulging strongly outward, thediameter of the cavity varies very considerably in its different portions. 54 TOPOGRAPHY OF THE SOUND-CONDUCTING APPARATUS. The clearest conce
A text-book of the diseases of the ear and adjacent organs . l; c, Section of the mem-brana tympani, of the handle of the malleus, and of the posterior pouch ; d, Pro-montory ; e, Ostium tymp. tubae ; /, Stapes in connection with the inferiorextremity of the long process of the incus and of the tendon of the stapedius;g, Mastoid process ; h, Cochlea ; i, Vestibule ; k, Carotid canal. wall of the cavity, on the other hand, is bulging strongly outward, thediameter of the cavity varies very considerably in its different portions. 54 TOPOGRAPHY OF THE SOUND-CONDUCTING APPARATUS. The clearest conception of the topography of the tympanic cavity is obtainedfrom vertical and horizontal sections (as represented by the accompanyingFigs. 57 and 58), or by corrosion preparations. The distance of the membrane at its umbilical depression from the pro-montory is on an average 2 mm. Below this spot and at a distance of Umm. is that part of the promontory which is curved most strongly distance from this point to the membrana tympani is about 2\ )
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecteardiseases, bookyear
