| Opening | Contents |
| Cribriform plate | Olfactory Nerve (CN I) |
| Optic canal | Optic Nerve (CN II) |
| Superior orbital fissure | Oculomotor (CN III), Trochler (CN IV), Trigeminal Opthalmic division (CN V1), Abducens (CN VI), sympathetic fibers,superior ophthalmic vein |
| Foramen rotundum | Trigeminal Maxillary division (CN V2) |
| Foramen ovale | Trigeminal Mandibular division (CN V3) |
| Foramen spinosum | Middle Meningeal artery |
| Foramen lacerum | Artery and nerve of pterygoid canal, cartilage and venous drainage |
| Carotid Canal | Carotid artery |