OSTEOLOGY 



22 



Pharyngeal canal (O. T. pterygo 



palatine canal) 

 Basipharyngeal canal 

 Sulcus of auditory tube 

 Pterygopalatine sulcus 

 Pterygospinous process 



Temporal bone 



Mastoid part 



Occipital margin 



Mastoid process 



Mastoid notch (O. T. digastric fossa) 



Sigmoid sulcus (O. T. fossa sig- 



moidea) 



Groove for the occipital artery 

 Mastoid foramen 

 Petrous part (pyramid) 

 Anterior surface of pyramid 

 Posterior surface of pyramid 

 Inferior surface of pyramid 

 Apex of pyramid 

 Superior angle of pyramid 

 Anterior angle of pyramid 

 Posterior angle of pyramid 

 Superior petrosal groove 

 Roof of tympanum 

 Arcuate eminence (O. T. eminence for 



superior semicircular canal) 

 Facial canal (O. T. aqueduct of Fal- 



lopius) 

 Hiatus of facial canal (O. T. hiatus 



Fallopii) 



Little knee of facial canal 

 Groove for the greater superficial 



petrosal nerve 

 Groove for the lesser superficial 



petrosal nerve 



Trigeminal impression (O. T. depres- 

 sion for Gasserian ganglion) 

 Internal acoustic pore 

 Internal acoustic meatus 

 Subarcuate fossa 

 Aqueduct of vestibule 



External opening of aqueduct of vesti- 

 bule 



Inferior petrosal groove 



Jugular notch 



Intrajugular process 



Jugular fossa 



Mastoid canaliculus 



Sulcus of mastoid canaliculus 



Styloid process 



Sheath of styloid process (O. T. 

 vaginal process) 



Stylomastoid foramen 



Petrosal fossula 



Tympanic canaliculus 



Tympanic sulcus 



Inferior opening of tympanic canal- 

 iculus 



Superior opening of tympanic canal- 

 iculus (O. T. opening for smaller 

 petrosal nerve) 



Canaliculus of the cochlea 



External opening of the canaliculus of 

 the cochlea 



Carotid canal 



Caroticotympanic canaliculus 



Musculotubal canal 



Semicanal of the tensor muscle of tym- 

 panum (O. T. canal for tensor 

 tympani muscle) 



Semicanal of auditory tube (O. T. 

 canal for the Eustachian tube) 



Septum of the musculotubal canal 



Cavity of the tympanum (see Organ oj 

 Hearing) 



Canaliculus of cord of tympanum 



Petrotympanic fissure (O. T. Glaserian 

 fissure) 



Petrosquamosal fissure 



Tympanic part 



Tympanic ring 



External acoustic meatus 



Spine above meatus 



Tympanomastoid fissure 



