536 



ANATOMY IX A XUTSHELL. 



verted into the posterior dental canal by its articulation with the palate bone. 

 The superior surface, or orbital surface, forms part of the floor of the orbit. 

 Its inner border articulates with the orbital process of the palate bone behind, 

 and with the os planum of the ethmoid in the middle, and with the lachrymal 

 bone in front. Its outer border helps in form the spheno-maxillary fissure 

 and sometimes articulates with the orbital plate of the sphenoid bone. Its 

 anterior border helps to form the circumference of the orbit and is continuous 



PLATE CCLXXVI. 



SPERMATIC ARTERY 



PAMPINIFORM PLEXUS 



HEAD Of EPIOIDYMUS 

 GLOBUS MAJOR — 



HYATID MORGAGNI 



ARTERY OF 

 VAS DEFERENS. 



TAIL OF EPIDIOYMUS 

 GLOBUS MINOR — 



PARIETAL PORTION OF TUNICA VAGINALIS.' 



Testicle \\i> Spermatic Cord. 



with the nasal process internally and the malar process externally. The in- 

 fraorbital groove, which is for the infraorbital vessels and nerve, runs forward 

 in the mid-line to end in the infraorbital canal and foramen. This canal also 

 opens into a small canal which runs in the anterior wall of the antrum for 

 the passage of the anterior dental vessels ami nerve. There may also be a sec- 

 ond dental canal for the middle dental nerve which passes to the bicuspid teeth. 

 The Inferior oblique muscle of the orbital region arises from a depression just 

 external to the lachrymal groove. 



