Chapter 1 CN Flashcards
describe peripheral nystagmus
fatigable, latency present, suppression by visual fixation, <1min, unidirectional horizontal/torsional
describe peripheral vertigo
subjectively more severe, walking preserved, hearing change and tinnitus common
taste to anterior two thirds of tongue
Facial Nerve
Tactile sensation to anterior two thirds of tongue
Trigeminal v3
Taste to posterior one third
glosspharyngeal IX
Parasympathetics to head and neck nucleus
superior salivatory nucleus
Motor nuclei to pharynx and larynx
nucleus ambiguus
Parotid nuclei nuclei
inferior salivatory nucleus
Nuclei for taste sensation
rostral nucleus solitarius
Nuclei for baroreceptor
caudal nucleus solitarius
Nuclei for parasympathetic to chest thorax and GI
dorsal motor nucleus of vagus
Corneal reflex
Aff = Trigeminal –> Eff= Facial
Gag
IX –> X
pupil sparin third nerve etiology
diabetes
Horner’s when proximal to bifurcation
anhidrosis (absent distal to external carotid), miosis and ptosis
Head tilt in trochlear palsy
contralateral head tilt
reflex absent in argyll robertson
pupillar (accomodation intact)
Marcus Gunn
absent direct light reflex but present consensual
down and out
third nerve
painful vision loss
optic neuritis
painless vision loss
AION
cocaine 4 or 10%
confirmation of horners no change in horner’s pupil
hydroxyamphetamine and horner pupil dilates , what order ?
first or second order
Hydroxyamphetamine and horner pupil does not dilate
third order
