BONES 



224 



BONES 



Hyoid Bone, Anterior Aspect, 

 i, i. Anterior or convex surface of body. 2, 2. Greater 

 cornua. 3, 3. Junction of greater cornua with body. 

 4, 4. Lesser cornua. 



Base of Skull. 

 . Median suture of palatine vault. 2. Inferior orifice of an- 

 terior palatine canal. 3, 3. Inferior openings of posterior 

 palatine canals. 4. Posterior border of palatine vault ; pos- 

 terior nasal spine. 5. Posterior border of nasal septum. 6. 

 Hamular process of internal pterygoid plate of sphenoid 

 bone. 7. Internal pterygoid plate. 8. External pterygoid 

 plate. 9. Scaphoid fossa. 10. Oval or inferior maxillary 

 foramen. 11. Foramen spinosum. 12. Foramen lacerum 

 medium. 13. Zygomatic arch. 14. Sphenooccipital suture. 

 15. Glenoid tavity. 16. External auditory canal. 17. Mas- 

 toid process. 18, 18. Styloid process and stylo-mastoid fora- 

 men. 19. Inferior orifice of carotid canal. 20. Foramen 

 lacerum posterius. 21, 21. Occipital condyles. 22. Basilar 

 process. 23. Foramen magnum. 24. External occipital 

 crest. 25, 25. Inferior curved lines of occipital bone. 



The Orbital Cavities. 



1. Anterior opening of nasal fossae. 2. Anterior extremity of 

 inferior turbinated bone. 3. Malar bone. 4,4. Orbital cavi- 

 ties. 5. Lachrymal canal. 6. Os planum of ethmoid. 7. 

 Optic foramen. 8. Sphenoidal fissure. 9. Spheno-maxillary 

 fissure. 10. Great wing of sphenoid. 11. Squamous portion 

 of temporal. 12. Anteroinferior angle of parietal. 13. Por- 

 tion of frontal entering into formation of temporal fossa. 14. 

 Mastoid process. 15. Styloid process. 



Thorax, Anterior View. 



1, Manubrium sterni. 2. Gladiolus. 3. Ensiform cartilage or 

 xiphoid appendix. 4. Circumference of apex of thorax. 5. 

 Circumference of base. 6. 1st rib. 7. 2d rib. 8,8. 3d, 4th, 

 5th, 6th and 7th ribs. 9. 8th, 9th and 10 ribs. 10. nth and 

 12th ribs. 11, 11. Costal cartilages. 



Ribsof Left Side, 



Posterior 



Aspect. 



1-12. Anterior ex- 

 tremities of 12 

 ribs of left side. 

 13, 13. Internal 

 surface. 14, 14. 

 External surface. 

 15. Head of 1st 

 rib. 16. Head of 

 2d rib. 17. Head 

 of 3d rib. 18, 18. 

 Heads of ribs 

 from 4th to 9th. 

 19. Head of 10th 

 rib. 20, 20. Heads 

 of nth and 13th 

 ribs. 21,21. Necks 

 of ribs. 22. Tuber- 

 cle of 1st rib. 23. 

 Articular facet of 

 tubercle of 2d rib. 

 24, 24. Articular 

 facets of tubercles 

 of ribs from 3d to 

 oth. 25. Articu- 

 lar facet for tu- 

 bercle of 10th rib. 

 26, 26. Angles of 

 ribs. 



