THE SKULL AND THE BONES OF THE SKULL 



Superior wall of the orbit 



Orbital arch 



Margo supra-orbitalis\ 



Trochlear spine (var.) 

 Spina trochlearis (var.) 



Frontomaxillary suture 

 Sutura frontomaxillaris 



Nasofrontal suture 



Sutura nasofrontalis . 



Lachrymo-ethmoidal suture 

 Sutura lacrimo-ethmoidalis""- 

 Laehrymal crest of the lachrymal bone 



Crista lacrimalis posterior 



Orbital ridge of the superior maxillary bone 

 Crista lacrimalis anterior 



Internal wall of the orbit 



Lachrymal groove 



Fossa sacci lacrimalis 



Hamular process of the lachrymal bone 

 Hamulus lacrimalis 



Inferior wall of the orbit 



Lachrymomaxillary suture ' 

 Sutura lacrimomaxillaris 



Infra-orbital margin / 



Margo infra-orbitalis' 



Infra-orbital foramen 



Foramen infra-orbitale 



1 U.S.: Anterior ethmoidal canal. 



Frontolachrymal suture 



Sutura frontolacrimalis 



Anterior internal orbital canal 1 



, Foramen ethmoidale anterius 



borame 



Fronto-ethmoidal suture Sutura fronto-ethmoidalis 

 Posterior internal orbital canal 2 



ethmoidale posterius 



Orbital plate, os planum, or lamina papyracea 



Of the ethmoid bone Lamina papyracea 



.Optic foramen 



Foramen opticum 



Spheno-ethmoidal suture 



Sutura sprieno-ethmoidalis 



Orbital process of the palate bone 



V~ Processus orbitalis ossis palatini 



Palatomaxillary suture 



Sutura palatomaxillaris 



. Sphenomaxillary fossa 



Fossa pterygopalatina 

 Infra-orbital groove 

 Sulcus infra-orbitalis 



Ethmoidomaxillary suture 



Sutura ethmoideomaxillaris 



1 Malar bone 

 Os zygomaticum 



2 U.S.: Posterior ethmoidal canal. 



FIG. 



. INTERNAL PORTION OF THE LEFT ORBIT, SHOWN BY THE REMOVAL OF THE 

 EXTERNAL WALL. SEEN FROM THE LEFT SIDE. 



Orbital plate of the frontal bone 

 Pars orbitalis ossis frontalis 



Sphenoidal fissure 

 Fissura orbitalis superior 



Sphenoidal foramen 



Apertura sinus sphenoidalis, 



Sphenoidal sinus 



Sinus sphenoidalis x 



Sphenopalatine foramen / 



Foramen sphenopalatinum 



Orifice of the maxillary sinus 

 Hiatus maxillaris 



Superior wall of the orbit 



Orbital arch Margo supra-orbitalis 

 f ,> 

 Lachrymal fossa 



-" Fossa glandulae lacrimalis 



Spheno-orbital suture 



--Sutura spheno-orbitalis 



_ Orbital surface of the great wing 

 Facies orbitalis alas magnae 



External wall of the orbit 

 .Entrance to the orbit Aditus orbitae 

 Sphenomalar suture 



"Sutura sphenozygomatica 



..Orbital surface of the malar bone 



Lamina orbitalis ossis zygomalici 



-Sphenomaxillary fissure 



Fissura orbitalis inferior 



~~- Infra-orbital margin 



Margo infra-orbitalis 



v Jnfra-orbital foramen 

 Foramen infra-orbitale 



Inferior wall of the orbit ' 



Paries inferior orbita: 



Lachrymal groove 



Sulcus lacrimalis 



FIG. 215. EXTERNAL PORTION OF THE LEFT ORBIT, SHOWN BY THE REMOVAL OF THE 

 INTERNAL WALL OF THE ORBIT AND OF A PORTION OF THE SUPERIOR MAXILLARY BONE 

 1M A LONGITUDINALLY HEMISECTED SKULL. 



Orbita The orbits. 



