Floor of cranial cavity

Anterior cranial fossa; terminal nerve; olfactory bulb and tract, superior view

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Image #50-3
Bassett ImageDiagram Image
Legend Image
Floor of cranial cavity
Anterior cranial fossa; terminal nerve; olfactory bulb and tract, superior view
The dura mater has been removed from the bone to the left of the midline except in the region of the cribriform plate. Ther terminal nerve (3) was cut at the point of its penetration through the arachnoid membrane covering the gyrus rectus on the inferior surface of the frontal lobe.
1 . Position of foramen caecum frontal bone
2 . Anterior meningeal artery
3 . Terminal nerve
4 . Olfactory bulb (several of the numerous olfactory nerves are visible passing from the bulb into the cribriform plate)
5 . Olfactory tract
6 . Lesser wing sphenoid bone
7 . Anterior clinoid process
8 . Upper pointer: Crista galli Lower pointer: Cut edge of falx cerebri
9 . Dura mater covering orbital part of frontal bone
10 . Optic nerves (ll)
11 . Left pointer: Ophthalmic artery Right pointer: Internal carotid artery