Bassett Collection Large Image - Lane Medical Library, Stanford University Medical Center

For permissions information regarding the use of these images, please contact Drew Bourn at dbourn@stanford.edu

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)
7 .	Greater wing of sphenoid (bordering left middle cranial fossa)
8 .	Fossa of lacrimal sac (faintly visible)
9 .	Sella turcica
10 .	Sphenopalatine foramen (Pterygopalatine fossa visible slightly inferiorly)
11 .	Zygomatic bone (faintly visible superimposed on maxillary sinus)
12 .	Mental foramen
13 .	Inner surface of cranial vault in midsagittal plane
14 .	Parietal bone (grooves for middle meningeal artery visible anteriorly; channels for temporal posterior diploic vein visible posteriorly)
15 .	Squamous suture
16 .	Temporal bone (squamous part)
17 .	Lambdoidal suture
18 .	Mastoid cells (extending into temporal bone (squamous part)
19 .	Location of external acoustic meatus
20 .	Transverse sinus leading anteriorly into sigmoid sinus
21 .	External occipital protuberance
22 .	Mastoid process (occipital condyles visible slightly anteriorly)
23 .	Zygomatic arch left (faintly visible)
24 .	Pterygoid process of sphenoid bone
25 .	Hard palate (inferior surface in midline)
26 .	Mandibular canal