Flashcards in Clinical anatomy of cranial nerves Deck (57)
What runs in the cribriform plate of the ethmoid bone?
What is the contents of the optic canal of the sphenoid bone?
Optic nerve and the ophthalmic artery
In what bone is the superior orbital fissure?
What runs in the SOF?
Superior ophthalmic vein
Inferior ophthalmic vein
What runs in the foramen rotundum?
What runs in the foramen ovale?
What runs in the internal acoustic meatus?
What runs in the jugular foramen?
Inferior petrosal sinus
Glossopharyngeal nerve, vagus nerve and spinal accessory nerve
In what bone is the internal acoustic meatus?
Petrous part of temporal bone
In what bone is the hypoglossal canal?
What runs in the hypoglossal canal?
What runs in the foramen magnum?
Anterior and posterior spinal arteries
What runs in the foramen spinosum?
Middle meningeal artery
Where will the optic nerve connect with the CNS?
Diencephalon at the lateral geniculate nucleus where it will then radiate to the visual cortex at the occipital lobe
How can the optic nerve be tested?
Acuity - snellen
Colour - ishihara
Where does the oculomotor nerve originate?
What are the contents of the cavernous sinus?
Ophthalmic branch of trigeminal nerve
Maxillary branch of trigeminal nerve
Internal carotid artery
Where does the trochlear nerve originate?
Where does the abducens nerve originate?
How are CN 3,4 and 6 tested?
H test - eye movements
Where does the vestibulocochlear nerve originate?
How is the vestibulocochlear nerve tested?
Describe rinne and weber testing?
Rinne - hold infront of ear and then on mastoid. In conducive hearing loss, you will hear better when on mastoid whereas in sensorineural you will hear better in air
Weber - hold tuning fork on head - sensorineural it will lateralise to normal ear but in conduction it will go towards affected ear
Where does the spinal accessory nerve originate on the CNS?
Cervical spinal cord - top 4 segments
How is the spinal accessory nerve tested?
Shug shoulders = trapezius
Turn head to flex neck and turn head towards opposite side
Where does the hypoglossal nerve connect with the CNS?
Via many rootlets lateral to the pyramids of the medulla oblongata
Where will the hypoglossal canal descend?
Lateral to the carotid sheath
At level of hyoid, tuns anteriorly towards lateral aspect of tongue
What is the medullary olive?
Inferior olive - cerebellar system
Superior orlive - pons and part of the auditory system, aiding the perception of sound
What innervates the palatoglossus muscle?