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Illustration of a tentorial branch arising from the ophthalmic division (the nervus tentorii; arrow) of the trigeminal ganglion. IC, internal carotid artery; ON, optic nerve; PG, pituitary gland; TC, tentorium cerebelli; TG, trigeminal ganglion; V1, ophthalmic division; V2, maxillary division; V3, mandibular division.
