Flashcards in Clinical anatomy of cranial nerves Deck (57)
Loading flashcards...
1
What runs in the cribriform plate of the ethmoid bone?
Olfactory nerve
2
What is the contents of the optic canal of the sphenoid bone?
Optic nerve and the ophthalmic artery
3
In what bone is the superior orbital fissure?
Sphenoid
4
What runs in the SOF?
Lacrimal nerve
CN V1
Superior ophthalmic vein
CN 4
CN 3
CN 6
Inferior ophthalmic vein
5
What runs in the foramen rotundum?
Maxillary nerve
6
What runs in the foramen ovale?
Mandibular nerve
7
What runs in the internal acoustic meatus?
Facial nerve
Vestibulocochlear nerve
Vestibular ganglion
Labyrinthe artery
8
What runs in the jugular foramen?
Inferior petrosal sinus
Glossopharyngeal nerve, vagus nerve and spinal accessory nerve
Sigmoid sinus
9
In what bone is the internal acoustic meatus?
Petrous part of temporal bone
10
In what bone is the hypoglossal canal?
Occipital bone
11
What runs in the hypoglossal canal?
Hypoglossal nerve
12
What runs in the foramen magnum?
Medulla
Meninges
Vertebral arteries
Anterior and posterior spinal arteries
Dural veins
13
What runs in the foramen spinosum?
Middle meningeal artery
14
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
15
How can the optic nerve be tested?
Acuity - snellen
Colour - ishihara
Fields
Reflexes
Fundoscopy
16
Where does the oculomotor nerve originate?
Midbrain
17
What are the contents of the cavernous sinus?
Oculomotor nerve
Trochlear nerve
Ophthalmic branch of trigeminal nerve
Maxillary branch of trigeminal nerve
Internal carotid artery
Abducens nerve
18
Where does the trochlear nerve originate?
Midbrain
19
Where does the abducens nerve originate?
Pontomedullary junction
20
How are CN 3,4 and 6 tested?
H test - eye movements
21
Where does the vestibulocochlear nerve originate?
Pontomedullary junction
22
How is the vestibulocochlear nerve tested?
Rinne
Weber
23
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
24
Where does the spinal accessory nerve originate on the CNS?
Cervical spinal cord - top 4 segments
25
How is the spinal accessory nerve tested?
Shug shoulders = trapezius
Turn head to flex neck and turn head towards opposite side
26
Where does the hypoglossal nerve connect with the CNS?
Via many rootlets lateral to the pyramids of the medulla oblongata
27
Where will the hypoglossal canal descend?
Lateral to the carotid sheath
At level of hyoid, tuns anteriorly towards lateral aspect of tongue
28
What is the medullary olive?
Inferior olive - cerebellar system
Superior orlive - pons and part of the auditory system, aiding the perception of sound
29
What innervates the palatoglossus muscle?
Vagus nerve
30
