THE SKULL AND THE BONES OF THE SKULL 



49 



Frontal crest 



Crista frontalis 



Foramen caecum 



Foramen caecum 



Crista galli, 

 Crista galli \ 



Spheno-ethmoidal suture 



Sutura spheno-ethmoidalis 



flmpressiones digi- . 

 tatae 1 



(.Juga cerebralia 1 



^onto-ethmoidal suture 



/Sutura fronto-ethmoidalis 



Anterior cranial fossa 



Fossa cranii anterior 



Middle cranial fossa 



Fossa cranii media 



Foramen lacerum medium . 



Foramen lacerum 



Clivus, or basilar groove 

 Clivus 



Superior border of petrous 

 bone 



Angulus superior pyramidis 



Jugular foramen 



Foramen jugulare 



Sigmoid sulcus 

 Sulcus sigmoideus 



Posterior cranial fossae 



Fossa cranii posterior 



Internal occipital crest 



Crista occipitalis interna 



Sphenoidal plane, or jugum 



spheuoidale 

 Planum sphenoidale 

 Spheno-orbital suture 

 '' Sutura spheno-orbitalis 



Sphenoidal limbus 

 Limbus sphenoidalis 



Coronal or frontoparietal suture 

 Sutura coronalis 



Sphenosquamous suture 



Sutura sphenosquamosa 



Petrosphenoidal suture 

 Fissura sphenopetrosa 



Occipitosphenoidal synckon- 



drosis 

 Synchondrosis spheno- 



occipitalis 

 Fetrobasilar fissure 

 Fissura petro-occipitalis 



Parietomastoid suture 

 Sutura parietomastoidea 



Internal occipital protuberance 



Protuberantia occipitalis interna 



Occipitomastoid suture 



Sutura occipitomastoidea 



Lateral sulcus 

 Sulcus transversus 



b0 " e corres P ndin S with th e sulci and convolutions of the inferior surface of the frontal 



FIG. 105. INTERNAL ASPECT OF THE BASE OF THE SKULL BASIS CRANII INTERNA: Foss^ 

 RANII ANTERIOR, MEDIA, ET POSTERIOR THE ANTERIOR, MIDDLE, AND POSTERIOR 

 CRANIAL FOSS.E. SEEN FROM ABOVE. 



Cranium The skull. 



