Bones of the Cranium. 



Hamuius 

 pterygoid. 



6. Sphenoid Bone, Os sphenoideum from behind. 



]> o d y. The posterior surface articulates with the basilar portion 

 of the occipital bone. 



Pterygoid processes: at the upper half of the posterior 

 border of the inner plate is the sulcus for the Eustachian tube, Sulcus 

 tubae EustacJiianae ; between this and the Foramen ovale are the CanalicuU 

 pterygoidci ; the outer of which has its orifice on the cerebral surface of 

 the great wing between the Linyula and Foramen rotundnm (Fig. 4), the 

 inner in the Vidian canal. 



The sphenoid bone articulates with nil the cranial hones and 5 bones 

 of the face, namely "with the 2 malar bones, the 2 palate bones and the vomer. 



