92 



THE SKULL AND THE BONES OF THE SKULL 



Internasal suture 

 Sutura internasalis 

 Superciliary ridge 



Arcus superciliaris 



Lachrymal groove 



Sulcus lacrimalis 



Lachrymal bone 



Os lacrimale 



Nasofrontal suture 



Sutura nasofrontalis 



Bony septum of the nose 

 Septum nasi osseum 



Frontomaxillary suture 

 Sutura frontomaxillaris 

 Orbital arch 

 Margo supra-orbi tails 



Lachrymal fossa 



Fossa glandulas lacrimalis 



Superior wall, or roof, 



of the orbit 



Orbital plate, os 



planum, or lamina 



papyracea, of the 



ethmoid bone 

 Lamina papyracea 



Orbital process of 

 the palate bone 

 Processus orbitalis - 

 ossis palatini 



Sphenomaxillary 

 fossa 



Fossa pterygopalatina 



Foramen rotundum,.- 



Foramen rotundum 



Pterygopalatine canal 



Canalis pharyngeus 



Pterygoid process 

 Processus pterygoideus 



Vidian or pterygoid canal 



Canalis pterygoideus (Vidii) 



Sphenoidal sinuses 



Sinus sphenoidales 



*Sphenoidal 

 canaliculus 1 



*Can:ilicu!us splunioid 



Ala of the vomer 



Ala vomeris 



I Ethmoidal cells 



I Labyrinthus ethmoidalis 



Frontomalar 



suture 



Sutura zygomatico 

 frontalis 



Sphenoidal fissure 



or foramen 



lacerum auterius 



Fissura orbitalis 



superior 



\\ Superior turbinate 



bone 



Concha nasalis 

 superior 



Spheno-ethmoidal 



recess 



Recessus spheno- 

 ethmoidalis 



Sphenoidal foramen 



Apertura sinus 

 sphenoidalis 



1 I am indebted to Professor Toldt for the following account of the *Sf>henoiJjl canaliculus, which is 

 accurately described neither by Quain nor by Macalister : "It begins in the scaphoid fossa and divides 

 as it ascends into two branches, the inner of which opens into the Vidian canal, while the outer opens 

 on the cerebral surface of the great wing of the sphenoid bone, between the lingula of the sphenoid 

 bone and the foramen ovale." The outer brancli is termed by English anatomists the foramen of Vesalius, 

 and transmits an emissary vein : the inner branch gives passage to the Sphenoidal branch of the otic 

 ganglion, by means of which this ganglion communicates with the Vidian nerve. TR. 



FIG. 207. By MEANS OF A NEARLY HORIZONTAL SECTION PASSING THROUGH THE CENTRE 

 OF THE ENTRANCE TO THE ORBIT, THI<: UPPER PARTS OF THE NASAL Foss^j AND OF 

 THE ORBITS ARE DISPLAYED. SEEN FROM BELOW. 



Posteriorly the section passes through the body of the sphenoid bone and the root of the pterygoid 

 process, opening up the Vidian canal through its whole length. A bristle has been passed into the 

 *sphenoiclal caiwlicuhis 1 from the Vinian canal. The lateral masses of the ethmoid bone (ethmoidal 

 labyrinths) are divided in the horizontal plane. 



Cavum nasi et orbita The nasal fossae and the orbits. 



