Bassett Collection of Stereoscopic Images of Human Anatomy

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Floor of cranial cavity

Middle cranial fossa; dissection of left cavernous sinus (continued); semilunar ganglion; petrosal nerves

Image #51-1

KEYWORDS: Bones cartilage joints, Peripheral nervous system, Vasculature.

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Floor of cranial cavity

Middle cranial fossa; dissection of left cavernous sinus (continued); semilunar ganglion; petrosal nerves

More veins have been cut away to expose the three divisions of the trigeminal nerve (8,10,20) the abducens nerve (14) and the petrosal nerves (19,21).

1 .	Circular sinus
2 .	Tuberculum sellae
3 .	Oculomotor nerve (III)
4 .	Band of dura mater extending between anterior and posterior clinoid processes
5 .	Internal carotid artery
6 .	Optic foramen
7 .	Trochlear nerve (IV)
8 .	Ophthalmic nerve (V1)
9 .	Superior orbital fissure
10 .	Maxillary nerve (V2) entering foramen rotundum
11 .	Basilar venous plexus and posterior clinoid process
12 .	Posterior longitudinal ligament (cut off)
13 .	Ligamentous band of dura mater extending from tip of petrous part of temporal bone to sphenoid bone (petrodinoid ligament)
14 .	Abducens nerve (VI)
15 .	Major portion of trigeminal nerve (V)
16 .	Meckel's cave
17 .	Filament of cavernous nerve plexus
18 .	Semilunar ganglion (trigeminal)
19 .	Upper pointer: Thin lamina of bone which covers carotid canal Lower pointer: Major superficial petrous nerve
20 .	Mandibular nerve (V3)
21 .	Lesser superficial petrosal nerve
22 .	Middle meningeal artery (cut off)