DISSECTION OF THE HEAD AND NECK 



389 



(c) Posterior limb (cms posterius}. 



(d) Base of stirrup (basis stapedis) (0. T. foot-piece). 



Incisura tympanica (Rivini) 

 Pars flaccida membra nae tympani 



Plica membranae tympani 

 anterior 



Spina tympanica major ^^ 



Fissura pctroti/mpanica 

 (Glaseri) 



Prominentia malleolaris 

 Limbus membranae tympani 



Stria malleolaris^ 

 Umbo membranae tympani 



FIG. 190. 



^nr V : $|L Plica membranae tympani posterior 

 Spina tympanica, minor 



Meatus auditorius externus 



Limbus membranae tympani 



: .Pars tensa membranae 

 tympani 



'~ Oanalis fadalis (Fattoppii) 



The lateral surface of the left tympanic membrane (suface towards the meatus acusticus externus; 

 the latter has been removed by a saw-cut parallel and close to the tympanic membrane). (After Toldt. 

 Anat. Atlas, Wien, 1903, 3 Aufl., p. 924, Fig. 1420.) 



In the incus study 



(a) Body (corpus incudis). 



(b) Long limb (crus longum). 



(ba) Lenticular process (processus lenticularis) . 



(c) Short limb (crus breve). 



FIG. 191. 



Plica malleolaris anterior Chorda tympani 



Lig. mallei superius 

 Recessus epitympanicus - 

 rapitulum mallei ' 



Plica malleolaris posterior. 



Recessus membranae tympani' 

 posterior 



Recessus membranae tympani anterior 



^Tubaauditiva 

 

 --Insertion of the M. tensor tympani 



-Manubrium mallei 

 Membrana tympani 



Canalis facial is (Fattoppii)' 



Opening of the recessus membranae tympani superior 



The medial surface and the anterior and posterior recesses of the tympanic membrane, brought into 

 view by a saw-cut through the tympanum close to and parallel to the membrane and by removal of the 

 anvil. (After Toldt, Anat. Atlas, Wien, 1903, 3 Aufl., p. 924, Fig. 1421.) 



In the malleus study 



(a) Handle of hammer (manubrium mallei). 



(b) Head of hammer (capitulum mallei}. 



