THE ENTIRE SKULL 



487 



FIG. 394. 



Sagittal or Interparietal Suture. 



Parietal. 



Temporo-parietal Suture 



Parietal Part of Tentorium 



Squamous 



Cranial Cavity. 



^Squamous of Temporal. 



If' R viifll'M ^--Interior Clinoid Process. 



Alisphenoid. 

 Glaserian Fixxnrr. 



Alisphenoidal Part of Tentorium. 

 Temporo-sphenoidal Suture, 



Zygoma. 



Glenoid Cavity. 



Canal of Huguier. 



Bulla. 



Postglenoid Process. 



^ Foramen Ovale. 



x Foramen Eotimdum. 



Beginning of Sphenoidal Fissure. Presphenoid. Eustachian Opening. 



TRANSVERSE VERTICAL SECTION OF SKULL THROUGH SPHENOIDAL FISSURE. 



The anterior wall formed by the tentorium slopes backward and 

 upward and becomes the anterior part of the roof. It is concave from 

 side to side, and marked by impressions for the cerebellum. It turns 



FIG. 395. 



Sagittal Crest 



Wall of Cranium. 

 Cut Edge of Tentorium. 



Squamous 



For Malleus. 



Aquxductus Fallopii. l\ \Ki 

 Fenestra Ovalis. _ I\O 

 For Incus. "' 



Cochlea. -jr i\ft 

 Inner Chamber of Bulla. ( .1' -'jk'm 

 Upper Edge of Septum. s ^ji ,! 



Outer Chamber of Bulla V - 



Septum 



'Parietal. 



Tentorium Cerebelli. 

 Squamous of Temporal. 



Cells in Petrous. 



TENSOR TYMPANI. 



'. Fenestra Ovali*. 



'or STAPEDIUS. 



Bridii'. [Chambers of Bulla. 



Opening of Communication between Two 

 Mastuid of Temporal. 

 ^~ Cochlea. 



Posterior Kim of External Anrlitory Meatut 

 of Ectotymjjanic of Bulla. 



Entotympanic of Bulla. 

 Groove in Basioccipital for Blood-vessel. 



Inner Chamber of Bulla. 

 TRANSVERSE VERTICAL SECTION OF SKULL THROUGH EXTERNAL AUDITORY MEATUS. 



