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Head & Neck Q3.3
Cranial Nerves and Foramina of the Skull
| Question | Answer |
|---|---|
| Cribriform Plate | Olefactory Nerve (CN I) |
| Optic Foramen | Optic Nerve (CN II) |
| Superior Orbital Fissure | Oculomotor Nerve (CN III), Trochlear Nerve (CN IV), Abducent Nerve (CN VI), and Ophthalmic Division of Trigeminal Nerve (CN V1) |
| Supraorbital Foramen | Supraorbital Nerve (terminal branch of CN V1) and Supraorbital A. |
| Foramen Rotundum | Maxillary Division of Trigeminal Nerve (CN V2) |
| Infraorbital Foramen | Infraorbital Nerve (terminal branch of CN V2) and Infraorbital A. |
| Foramen Ovale | Mandibular Division of Trigeminal (CN V3) |
| Mandibular Foramen & Canal | Inferior Alveolar Nerve (from CN V3) and Inferior Alveolar A. |
| Mental Foramen | Mental Nerve (terminal branch of Inferior Alveolar Nerve from CN V3) and Mental A. (branch of inferior alveolar a.) |
| Internal Acoustic (Auditory) Meatus | Vestibulocochlear Nerve (CN VIII) and Facial Nerve (CN VII) |
| Sytlomastoid Foramen | Facial Nerve (CN VII) |
| Jugular Foramen | Glossopharyngeal Nerve (CN IX), Vagus Nerve (CN X), Accessory Nerve (CN XI), and the beginning of the Internal Jugular V. |
| Hypoglossal Canal | Hypoglossal Nerve (CN XII) |
| Foramen Magnum | Spinal Cord and Vertebral A. |
| Carotid Canal | Internal Carotid A. *Note: Internal Carotid A. follows a zig-zag path before emerging lateral to the sella turcica* |
| Foramen Spinosum | Middle Meningeal A. |
| Foramen Lacerum | In life, this opening is filled with cartilage; therefore, nothing passes through it. |
| Nasolacrimal Canal | Canal for drainage of tears from the medial eye into the nasal cavity |