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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 |