34 



ELEMENTS OF MAMMALIAN ANATOMY. 



projections are the posterior clinoid processes. On each 

 side of the basisphenoid there extends dorsally in a narrow 

 strip to the parietal the alisphenoid, at the base of which, 

 craniad of the auditory bulla, are three foramina in a line. 

 The most cranial and largest one is the sphenoidal fissure, 

 or anterior lacerated foramen, which transmits the third, 

 fourth, and sixth cranial nerves supplying the eyeball 

 muscles, and the first branch of the fifth nerve. This 

 foramen is between the alisphenoid and the orbitosphenoid. 

 The other two foramina, rotundum and ovale, transmit the 

 second and third divisions of the fifth nerve. 



TABLE OF THE FORAMINA OF THE SKULL. 



