ForamensStructuresCribriform plate of ethmoidOlfactory nervesOptic foramenOptic nerve, ophthalmic aery, meningesSuperior orbital fissureOculomotor, trochlear, and abducens nerves; ophthalmic division of trigeminal nerve; superior ophthalmic veinForamen rotundumMaxillary division of trigeminal nerve, small aery and veinForamen ovaleMandibular division of trigeminal nerve, veinForamen lacerumInternal carotid aery, sympathetic plexusForamen spinosumMiddle meningeal aery and veinInternal acoustic meatusFacial and vestibulocochlear nerves, internal auditory aeryJugular foramenGlossopharyngeal, vagus, and spinal accessory nerves; sigmoid sinusHypoglossal canalHypoglossal nerveForamen magnumMedulla and meninges, spinal accessory nerve, veebral aeries, anterior and posterior spinal aeries