Ch12 Brainstem I Flashcards
Motor Columns are
GSE
GVE
SVE
GSE- is adjacent to
midline
FSE CN are
3,4,6,12
Visceral motor nuclei are in two columns:
GVE
SVE
GVE is related to which nervous system?
parasympathetic
GVE CN are
3,7,9,10
SVE innervate muscles of
branchiomeric origi
SVE CN are
5,7,9,10,11
Sensory Columns, Visceral sensory columns: are
SVA
GVA
SSA
GSA
SVA is related to which censes
taste and smell
SVA CN are
1
7
9
10
GVA is sensory from
viscera
GVA CN are
9
10
SSA CN are
2 (sight)
8 (hearing & equilibrium)
GSA is sensory for
head (trigeminal)
GSA CN are
5
7
9
10
Olfactory Nerve (SVA) Specialized:
chemoreceptors
CN1 chemoreceptors are located on
the superior nasal cavity
nasal chemoreceptors send axons through
cribiform plate
Olfactory Nerve track doesn’t go though ____ while going to the temporal lobe
thalamus
CN1 lesions are causes
ansomia
hyeprosmia
parasmia
def: anosmia
loss of smell
def: hyperosmia
increased sensitivity to smell
def: parosmia
abnormal sensations of smell
CN1 lesions are caused by
- cocaine and other inhalants
- tumor of frontal lobe or pituitary gland
- viral infection
- trauma at the cribiform plate
Optic Nerve II testing includes
Inspection Funduscopic exam Visual Acuity Reflexes Confrontation testing of visual fields
Optic Nerve II Physiological problems: includes
cataracts
nyctalopia
uncorrected nearsightedness
define cataract
protein in the lens of the eye changes from clear to opaque
biggest contributor to cataract is
UV light exposure
cataracts is most common in what population?
elderly patients and welders
nyctalopia is due to
Vit A deficiency
nyctalopia causes
impaired night vision
in nyctalopia, cones takes longer to
recover vision when blasted by high beams
the inspection of CNII includes
exopthalmos
eye alignment
Pupils - PERRLA
Exopthalmos is ____ of eyes
bulging
PERRLA refers to
pupils-equal-round-reactive to light-accommodate
Funduscopic exam includes
disc
vessels
background
macula
How would you expect the pigments in a person with a darker skin:
more pigments
Trigeminal nerve V component
SVE
GSA
Trigeminal nerve 3 divisions
Ophthalmic
Maxillary
Mandibular
CN V Sensory lesions leads to
paresthesia
anesthesia
diminished absent reflexes
lesions in brainstem lead to _____ loss
ipsilateral
CN V Motor lesions leads to
muscle weakness
atrophy
diminished or absent jaw jerk reflex
Trigeminal Neuralgia aka
Tic Douloureux
Trigeminal Neuralgia Pt feels
stabbing electric pain in Trigeminal nerve distributions
Trigeminal Neuralgia frequency
rare
150 cases/ 1 m
Trigeminal Neuralgia is more common in what population?
women 30-50
Trigeminal Neuralgia attacks lasts about
1-2 min
Trigeminal Neuralgia attacks can happen over ____ per day
100 times
what tigers Trigeminal Neuralgia attacks
cold exposure touch pressure eating swallowing
Trigeminal Neuralgia Pts are prone to
sucide
Trigeminal Neuralgia is possibly caused by
- blood vessel compression
- M.S.
- tumor
- damage from dentistry/surgery
- subluxation (dentate ligament)
- idiopathic