BONES 



220 



BONES 



Lumbar Vertebra, Postero-Superior View. 

 I, i. Anterior surface of body. 2, 2. Trans- 

 verse processes. 3. Spinous process. 4, 

 4. Superior articular processes. 5,5. In- A. v 

 ferior articular processes. 



Sacrum, Anterior Aspect. 

 I, 1, 1, 1. Bodies of sacral vertebrae, 

 with transverse lines of union. 2, 2, 

 2, 2. Anterior sacral foramina. 3. 

 Base. 4. Auricular surface of lat- 

 eral aspect. 5. Its inferior portion. 

 6. Articular surface of base. 7. 

 Notch for formation of last lumbar 

 intervertebral foramen. 8 Superior 

 articular process of first sacral ver- 

 tebra. 9. Apex of sacrum. 10. 

 Cornu. 11. Notch for transmission 

 of fifth sacral nerve. 



Coccvx, Ante- 

 rior Aspect. 



1. Base. 2,2. Cor- 

 nua. 3. Sec- 

 ond coccygeal 

 vertebra. 4. 

 Third coccy- 

 geal vertebra. 

 5. Fourth coc- 

 cygeal verte- 

 bra. 6. Fifth 

 coccygeal ver- 

 tebra. 



Occipital Bone, Postero-Inferior 



View 

 . Basilar process. 2. Foramen magnum. 

 3, 3. Posterior condyloid foramina. 4. 

 Crest. 5. External occipital protuber- 

 ance. 6,6. Condyles. 7, 7. Jugular pro- 

 cesses. 8, 8. Jugular fossae. 



Parietal, Temporal, and Sphenoid Bones ; Posterior 

 Aspect. 

 1. Body of sphenoid bone. 2, 2. Sphenoid and temporal bones. 

 3, 3. "Parietal bones. 4, 4. Mastoid processes. 5, 5. Jugular 

 fossae. 6, 6. Notches entering into formation of sphenoidal 

 fissures. 7, 7. Spheno-parietal sutures. 8, 8. Spheno-tem- 

 poral sutures. 9, 9. Temporo-parietal sutures. 



Sacrum, Posterior Aspect. 



1, 1, 1, 1. Spinous processes of sacral 



vertebrae. 2, 2. Sacral groove. 3, 



3i 3. 3- Posterior sacral foramina. 



4,4,4,4. Articular processes, united. 



5. 5. 5< 5- Transverse processes. 6, 



6. Cribriform fossa. 7, 7. Auricular 

 surface. 8, 8. Superior articular 

 processes of first sacral vertebra. 9. 

 Superior orifice of sacral canal. 10. 

 Groove representing inferior ori- 

 fice. 11, 11. Cornua. 12. Apex. 



Vertebral Column, 

 Lateral Aspect. 



1-7. Cervical vertebrae. 

 8-19. Dorsal vertebrae. 

 20-24. Lumbar verte- 

 brae. A, A. Spinous 

 processes. B, B. Artic- 

 ular facets of trans- 

 verse processes of first 

 ten dorsal vertebrae. 

 C. Auricular surface of 

 sacrum. D. Foramina 

 in transverse processes 

 of cervical vertebrae. 



Nasal Bones, External Aspect. 

 , 1. The two nasal bones. 2, 2. Superior extremity. 3, 3. In- 

 ferior border. 4, 4. Internal border. 5, 5, 5, 5. External 

 border. 



