front 1 Cribriform Plate | back 1 Olfactory ( CN I ) |
front 2 Optic Foramen | back 2 Optic ( CN II), also retinal artery and vein |
front 3 Superior Orbital Fissure | back 3 Oculomotor ( CN III ) Trochlear ( CN IV ) Ophthalmic division of Trigeminal ( CN V1) Abducens ( CN VI ) |
front 4 Foramen Rotundum | back 4 Maxillary division of Trigeminal (CN V2) |
front 5 Foramen Ovale | back 5 Mandibular division of Trigeminal ( CN V3) |
front 6 Carotid canal | back 6 internal carotid artery |
front 7 Internal Auditory Meatus | back 7 Facial ( CN VII) Vestibulocochlear (CN VIII) |
front 8 Jugular Foreamen | back 8 Glossopharyngeal ( CN IX ) Vagus ( CN X) Spinal Accessory ( CN XI) also internal jugular vein |
front 9 Hypoglossal Foramen | back 9 Hypoglossal ( CN XII) |
front 10 Foramen Magnum | back 10 Spinal cord vertebral artery and vein |
front 11 Inferior Orbital Fissure | back 11 Maxillary division of Trigeminal (CN V2) |
front 12 Mandibular Foramen | back 12 Mandibular division of Trigeminal (CN V3) |