Question

What are the skull openings for the cranial nerves?

Answer 1

Answer:

The skull openings for the cranial nerves are the Cribriform Foramina (cranial nerve I), the Optic Canal (cranial nerve II), the Superior Orbital Fissure (cranial nerves III, IV, V, and VI), the Foramen Rotundum (cranial nerve V), the Foramen Ovale (cranial nerve V), the Internal Acoustic Meatus ( cranial nerves VII and VIII), the Jugular Foramen(cranial nerves IX, X, and XI), and the Hypoglossal Canal (cranial nerve XII).

Explanation:

1. The Cribriform Foramina is in the ethmoid bone it has the opening for the Olfactory nerve (cranial nerve I).
2. The Optic Canal is in the sphenoid bone in the middle cranial fossa and has the opening for the Optic nerve ( cranial nerve II).
3. The Superior Orbital Fissure is in the sphenoid bone in the middle cranial fossa and has the opening for the Trochlear nerve (cranial nerve IV), the Frontal nerve, which is a branch of the Trigeminal nerve (cranial nerve V), the Oculomotor nerve (cranial nerve III) and the Abducens nerve (cranial nerve VI).
4. The Foramen Rotundum is in the sphenoid bone in the middle cranial fossa and it allows the passage of the Maxillary branch of the Trigeminal nerve (cranial nerve V).
5. The Foramen Ovale is in the sphenoid bone in the middle cranial fossa and has the opening for the Mandibular branch of the Trigeminal nerve (cranial nerve V).
6. The Internal Acoustic Meatus is in the temporal bone and the middle cranial fossa, it has the openings for the Facial nerve (cranial nerve VII) and the Vestibulocochlear nerve (cranial nerve VIII).
7. The Jugular Foramen is in the temporal and occipital bones in the posterior cranial fossa, it has the openings for the Glossopharyngeal nerve (cranial nerve IX), the Vagus nerve (cranial nerve X) and the Accessory nerve (cranial nerve XI).
8. The Hypoglossal Canal has the opening for the Hypoglossal nerve (cranial nerve XII) and is in the occipital bone in the posterior cranial fossa.