the pathway of trigeminal nerves, facial nerves, and vestibulcochlear nerves in more detail

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thepathway of trigeminal nerves, facial nerves, and vestibulcochlearnerves in more detail

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PATHWAY OF TRIGEMINAL NERVE The trigeminal nerve arises by two rootsa smaller medial motor root and a larger sensory root from the ventrolateral aspect of the pons The sensory root passes forward and laterally over the apex of the petrous temporal bone to enter the middle cranial fossa Here it exhibits a rounded enlargement the trigeminal gasserian ganglion The subarachnoid expansion over this portion of trigeminal nerve is called meckels cave The convex distal surface of ganglion gives origin to three large divisions of the trigeminal nerve ophthalmicmaxillary and mandibular 1The ophthalmic nerve purely sensory arises from the anteriolateral aspect of the ganglion and enters the lateral wall of the cavernous sinus where it lies below the trochlear nerve In the cavernous sinus it divides into three branches nasociliary lacrimal and frontal All these branches enter the orbit through the superior orbital See Answer

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