Floor of cranial cavity
Middle cranial fossa; dissection of left cavernous sinus (continued); semilunar ganglion; petrosal nerves
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Image #51-1
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).
- Circular sinus
- Tuberculum sellae
- Oculomotor nerve (III)
- Band of dura mater extending between anterior and posterior clinoid processes
- Internal carotid artery
- Optic foramen
- Trochlear nerve (IV)
- Ophthalmic nerve (V1)
- Superior orbital fissure
- Maxillary nerve (V2) entering foramen rotundum
- Basilar venous plexus and posterior clinoid process
- Posterior longitudinal ligament (cut off)
- Ligamentous band of dura mater extending from tip of petrous part of temporal bone to sphenoid bone (petrodinoid ligament)
- Abducens nerve (VI)
- Major portion of trigeminal nerve (V)
- Meckel's cave
- Filament of cavernous nerve plexus
- Semilunar ganglion (trigeminal)
- Upper pointer: Thin lamina of bone which covers carotid canal Lower pointer: Major superficial petrous nerve
- Mandibular nerve (V3)
- Lesser superficial petrosal nerve
- Middle meningeal artery (cut off)