Cranial Nerves Tbc Flashcards
Difference between visceral and somatic nervous system
see below
The ocular motor nerves run between which arteries
Superior and posterior cerebellar artery
What does the oculomotor nerve divide into the superior and inferior branch before or after entering the superior orbital fissure
Before
The oculomotor nerve runs lateral to which artery
Posterior communicating artery
Which branch of the ocular motor nerves carries preganglionic, parasympathetic nerve fibres?
Inferior branch of the oculomotor nerve (longer than the Superior branch, terminates at the inferior oblique)
- CN 3 laterality of supply –
LPS left and right supplied
LPS left and right supplied by a single caudal nucleus associated with main motor nucleus
- CN 3 laterality of supply –
SR supplied
SR supplied by contralateral main motor nucleus
- CN 3 laterality of supply –
IR, MR, IO supplied by
ipsilateral main motor nucleus
And at what level is the oculomotor nerve found?
Midbrain, next to the central canal, at the level of the superior colliculus
What are tectobulbar fibres
Connect, cranial nerve 3, 4 and six to the superior and inferior colliculus, providing information from the visual, sensory, and auditory cortices to inform a movement.
What is the function of the MLF?
Communication between nerve three, four, six, to allow coordination
Which cranial nerve leaves on the posterior aspect of the brain
Cranial nerve four (trochlear nerve)
Which cranial nerve decussates
Four, curving around the superior cerebellar peduncle
Why is cranial nerve six more prone to damage?
Symptoms of weber syndrome
Symptoms of benedikts syndrome
Name the 4 trigeminal nuclei
Main sensory
Spinal
Mesencephalic
Motor nuclei (only motor)
The superior and inferior ophthalmic veins drain into
Cavernous sinus
Internal carotid aneurysms I dissections can compression which nerve
‘6
Name the three brainstem nuclei of the facial nerve
Name the branches of the facial nerve
Remember the acronym two zebras bit my cock:
Temporal love.
Zygomatic nerve?
Buccal nerve.
Mandibular nerve
Cervical nerve
