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1. Frontal sinus
2. Ethmoidal sinus
3. Sphenoidal sinus
4. Maxillary sinus
5. Anterior clinoid processes
6. Hypophyseal fossa
7. Posterior clinoid processes
8. Clivus
9. Great density of the petrous part of the temporal bone
10. External acoustic meatus
11. Mastoid cells
12. Nasopharynx
13. Angle of mandible
14. Anterior arch of the atlas
15. Dens of axis
16. Posterior arch of the atlas
17. Internal occipital protuberance
A. Coronal suture
B. Lambdoid suture
C. The grooves for the branches of the middle meningeal vessels |
