Skull foramina Flashcards
Foramen in ant. cranial fossa
Foramen cecum
Olfactory foramen in cribriform plate (ethmoid)
Middle cranial fossa
Optic canal Superior orbital fissure Foramen rotundum Foramen ovale Foramen spinosum Hiatus for greater petrosal nerve Hiatus for lesser petrosal nerve
Posterior cranial nerve fossa
Foramen magnum (occipital bone
Internal acoustic meatus (petrous part of temporal bone)
Jugular foramen (ant. petrous part of temporal bone/post. occipital bone)
Hypoglossal canal
Condylar canal
Foramen cecum
Emissary veins to the nasal cavity
Olfactory foramen in cribriform plate
Olfactory nerves (CN1)
Optic canal
Optic nerve (CN2) Ophthalmic artery
Superior orbital fissure
Oculomotor nerve (CN3) Trochlear nerve (CN4) Ophthalmic division of the trigeminal nerve (CN1) Abducent nerve (CN6) Ophthalmic veins
Foramen rotundum
Maxillary division of the trigeminal nerve (CN2)
Foramen ovale
Mandibular division of the trigemnial nerve (CN3)
Lesser petrosal nerve
Foramen spinosum
Middle meningeal artery
Hiatus for the greater petrosal nerve
Greater petrosal nerve
Hiatus for lesser petrosal nerve
Lesser petrosal nerve
Foramen magnum
End of brainstem/beginning of spinal cord
Vertebral arteries
Spinal roots of accessory nerve
Meninges
Internal acoustic meatus
Facial nerve (CN7) Vestibulocochlear nerve (CN8) Labyrinthine artery
Jugular foramen
Glossopharyngeal nerve ((CN9) Vagus nerve (CN10) Accessory nerve (CN11) Inferior petrosal sinus Sigmoid sinus (forming internal jugular vein)