THE FROG 25 



directed process, the neural spine, serving for the attachment of 

 muscles. A flattened rod of bone, the transverse process, passes 



poi 



P0.2 



FIG. 3. Vertebrae Rana. A, 5th vertebra dorsal aspect ; B, 5th vertebra 

 posterior aspect ; C, Atlas anterior aspect ; D, Atlas posterior aspect ; 

 E, F, G, 7th, 8th and gth vertebrae ventral aspect. 



c., centrum ; f.c., facet for articulation with exoccipital bone ; /.., facet for articulation 

 with urostyle ; /., lamina ; n.a.. neural arch ; n.c., neural canal ; n.s., neural spine ; p.t., 

 pre-zygapophysis ; po.z., post-zygapopbysis ; t.p., transverse process. 



outwards from the side of the pedicle near its base, and is tipped with 

 cartilage in the second, third and fourth vertebrae. 



A pair of processes, the zygapophyses, is given off from each end 



