Osteology

Roentgenogram of skull, left lateral view

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Image #35-2

Osteology

Roentgenogram of skull, left lateral view

The position of sutures on the left (near) surface of skull has been indicated by solid lines in the drawing.

1. Coronal suture
2. Frontal bone (squamous portion)
3. Location of temporal line left
4. Frontal sinus
5. Superior wall of orbit (the two dotted lines above represent the floor of the left and right anterior cranial fossae) 6. Margin of left orbit (faintly visible in view)
6. Greater wing of sphenoid (bordering left middle cranial fossa)
7. Fossa of lacrimal sac (faintly visible)
8. Sella turcica
9. Sphenopalatine foramen (Pterygopalatine fossa visible slightly inferiorly)
10. Zygomatic bone (faintly visible superimposed on maxillary sinus)
11. Mental foramen
12. Inner surface of cranial vault in midsagittal plane
13. Parietal bone (grooves for middle meningeal artery visible anteriorly; channels for temporal posterior diploic vein visible posteriorly)
14. Squamous suture
15. Temporal bone (squamous part)
16. Lambdoidal suture
17. Mastoid cells (extending into temporal bone (squamous part)
18. Location of external acoustic meatus
19. Transverse sinus leading anteriorly into sigmoid sinus
20. External occipital protuberance
21. Mastoid process (occipital condyles visible slightly anteriorly)
22. Zygomatic arch left (faintly visible)
23. Pterygoid process of sphenoid bone
24. Hard palate (inferior surface in midline)
25. Mandibular canal