THE SKULL AND THE BONES OF THE SKULL 



59 



Olivary eminence 



Tuberculum sellae 

 Pituitary fossa 

 Fossa hypophyseos 

 Dorsum sellae 

 Dorsum sellae 



Ethmoidal spine 



Spina ethmoidalis 



Optic groove Sulcus chiasmatis 

 ,' Optic foramen Foramen opticum 



Small wing 



Parietal angle 



Angulus parietalis" 



Anterior clinoid process 



Processus clinoideus anterior . 

 Middle clinoid process (var.) 

 Processus clinoideus medius 



Posterior clinoid process 



Processus clinoideus posterior 



Spinous process 



Spina angularis 



Posterior or petrous border 



Margo petrosus 



Body of the sphenoid bone \ 

 Carotid groove 



Sulcus caroticus 



Frontal border 



Margo frontalis 



Sphenoidal fissure 

 Fissura orbitalis superior 

 ~ Great wing 

 External or squamous border 



Margo squamosus 

 Foramen rotundum 

 Foramen rotundum 



Foramen ovale 



Foramen ovale 

 Foramen spinosum 

 Foramen spinosum 



Lingula of the sphenoid 



Lingula sphenoidalis 



Fir,. 118. THE SPHENOID BONE SEEN FROM ABOVE (CEREBRAL ASPECT). 



Sphenoidal foramen 



Apertura sinus sphenoidalis 

 Orbital border (of the Sphenoidal turbinate bone) 

 Margo orbitalis 

 Sphenoidal fissure Fissura orbitalis superior \ 



External or squamous u 

 border 



Margo squamosus 



Foramen rotundum 



Foramen rotundum 



Vidian or pterygoid canal 



Canalis pterygoideus (Vidii)- 



Pterygoid notch 



Fissura pterygoidea' 



Foramen ovale 



Foramen ovale 



Foramen spinosum Foramen spinosum 



Pterygoid process ' 



Processus pterygoideus j 



Vaginal process Processus vaginalis 



Sphenoidal rostrum 

 Rostrum sphenoidale 



, Sphenoidal turbinate bone (cornu sphenoidale, or bone of Bertin) 

 j Concha sphenoidalis Orbital surface of the great wing 

 /Facies orbitalis alae magnae 



jk x' Malar border Margo zygomaticus 

 Temporal surface of the 



great wing 1 



Facies temporalis alas 



magnas 



*0rbital crest 1 

 'Crista orbitalis 



Infratemporal crest 

 Crista infratemporalis 



Temporal surface of the great 



wing 1 

 Facies temporalis alae magnae 



Spinous procesa 



Spina angularis 



Pterygopalatine canal Canalis pharyngeus 

 . *Basipharyngeal canal 'Canalis basipharyngeus 2 

 Sphenoidal crest Crista sphenoidalis 



1 The Continental nomenclature differs here from that of English anatomists. What is called by the 

 author fades tempuralis alit magntr, the temporal surface of the great wing, is in England known as the 

 temporotygomatic surface, being divided by the infratemporal crest into an upper temporal surface and a lower 

 sphenomaxillary surface. As regards the term crista orbitalis, the crest, this is not used by Quain at 

 all, while Macalister applies it to the lower utarinn of the Sphenoidal fissure, the free border separating 

 the orbital from the cerebral surface of the great wing. Toldt, on the other hand, as an examin- 

 tion of Fig. no shows, means by crista orbitalts the posterior margin of the sfhenoma.villary fissure, 

 free border separating. the orbital from the zygomatic surface of the great wing. TR. 



2 See note to p. 48. 



FIG. 119. THE SPHENOID BONE SEEN FROM BELOW (EXTERNAL ASPECT). 



Os sphenoidale The sphenoid bone. 



82 



