The sixth nerve, the abducens nerve, which innervates the lateral rectus muscle of the eye ( moves the eye laterally ), is also commonly affected but fourth nerve, the trochlear nerve, ( innervates the superior oblique muscle, which moves the eye downward ) involvement is unusual.
22.
Cavernous sinus syndrome may result from mass effect of these tumors and cause ophthalmoplegia ( from compression of the oculomotor nerve, trochlear nerve, and abducens nerve ), ophthalmic sensory loss ( from compression of the ophthalmic nerve ), and maxillary sensory loss ( from compression of the maxillary nerve ).
23.
For example, r2 has been shown to give rise to the trigeminal ganglion, while r4 has been shown to give rise to the geniculate gangion as well as spiral and Scarpa's ganglia . r5 and r6 gives rise to the abducens nerve, and the lower part of r6 and the upper part of r7 gives rise to the petrosal ganglion.
