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pirotte Neuro
limbic/pain/HA/epilepsy/channelopathy
93
Other
Not Applicable
09/21/2005

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Cards

Term
cortical components of limbic system
Definition
subcallosal, anterior cingulate, post cingulate, parahippocampal-entorhinal, orbitofrontal, and insular cortices
Term
extracortical componenets of the limbic system
Definition
olf bulb, piriform olf cort, hypothal, amyg, hippocampus, VA thal, septal nn., n. accumbens (ventral striatum)
Term
amygdala lesion produces inabillity to recognize which facial expression?
Definition
fear
Term
path of smell...
Definition
olf epithelium, glomeruli, mitral cells that make up olf tract
Term
what is the cortical target of smells?
Definition
piriform, medial amygdala, entorhinal cortex
Term
what hypothalamic n. does the amygdala communicate with and how?
Definition
VM via the stria terminalis
Term
what part of the limbic system directly affects autonomics?
Definition
amyg
Term
what part of the hippo give rise to the fornix?
Definition
CA1
Term
where does the fornix terminate?
Definition
mamms, VA, subcallosal cortex
Term
what is the lesion producing Kluver-Bucy?
Definition
B/l lesions of TL
Term
sx of Kluver-Bucy?
Definition
visual agnosia, oral tendencies, loss of fear/anger, hypersex
Term
components of hippocamp?
Definition
subiculum, CA, dentate gyrus
Term
hormone regulated by the hippo?
Definition
cortisol
Term
what aspect of memory is knocked out by b/l hippo lesions?
Definition
declarative
Term
Papez circuit...
Definition
hippo-mamm-ant n.-cingulate-enterorhinal (H.MACE, FMACP)
Term
biochem of LTP?
Definition
NMDAR activate inc number of AMPA GluR increasing postsyn response to Glu
Term
what causes Wernicke's encephalopathy?
Definition
lack of B12
Term
sx of Wernkikes encephalopathy?
Definition
confusion, visual problems, stupor, coma, hypotherm, hypotens, ataxia
Term
chief feature of Korsikoff's syn?
Definition
inability to form new memory or retrieve old mem
Term
why can older animals not terminated stress related cortisol secretion rapidly?
Definition
degen of hippocampal neurons
Term
what substances participate in nocioceptive transduction?
Definition
SP, AA metabolites, CGRP, neurokinin A
Term
what nerve afferents are assoc with pain?
Definition
A-d, C
Term
myelination of A-d fibers?
Definition
small my
Term
myelination of C fibers?
Definition
un
Term
what nerves carry visceral nocioception?
Definition
SDANS
Term
where doe nocioceptive fibers terminate in the SC and BS?
Definition
spV n.
Term
what lamina are the origin fo the STT?
Definition
I, IV, V
Term
what NTs are released in pain afferents in the short term?
Definition
Glu
Term
what NTs are released in pain afferents in the short term?
Definition
SP, CGRP, ATP
Term
pathways of the lateral pain system
Definition
lSTT --> VPL, trigeminothalamic --> VPM
Term
characteristics of the lateral pain system
Definition
small fields, fast CNS conductance, high somatotopy
Term
fxn of lateral pain system
Definition
discrim of loc/intensity
Term
pathways of the medial pain system
Definition
lateral system, SRtT, FG/C, DLF
Term
projections of the medial pain system
Definition
intralaminar thalamus --> ant. cing. cortex
Term
characteristics of med pain system
Definition
large fields, slow conductance (multi-syn), no somatotopy, opiodR in the Ant. Cing. Cortex
Term
mech of pain gating
Definition
activation of med/large myelinated afferents, which activate dorsal horn interneurons
Term
two ways to activate the PAG
Definition
input (ACC, ascendings), disinhibition (i.e. opiates)
Term
NT of descending PAG mediated inputs to dorsal horn?
Definition
5ht, NE
Term
action of descending PAG mediated inputs to dorsal horn
Definition
inhibition of neurons, stim of interneurons to release ENK
Term
d allodynia
Definition
pain from nonnoxious stim
Term
d causalgia
Definition
chronic burning (neural trauma)
Term
d reflex sympathetic dystrophy
Definition
pain mediated by abnmly active symp fibers
Term
what is Hansen's disease?
Definition
leprosy, loss of skin innervation
Term
main lamina of the STT?
Definition
V
Term
wide dynamic range, low threshold characteristic of...
Definition
ant STT
Term
what do wide dynamic range neurons sense?
Definition
crude touch
Term
what do low threshold neurons sense?
Definition
movement
Term
what projections does lamina I send to the STT?
Definition
pain, temp
Term
what sort of pain travels in A-d?
Definition
acute
Term
what sort of pain travesl in C fibers?
Definition
"aches"
Term
simple explanation for referred pain
Definition
somatovisceral convergence in the dorsal horn
Term
lamina I projects to what part of the STT?
Definition
lat
Term
lamina V projects to what part of the STT?
Definition
ant
Term
NT assoc with allodynia?
Definition
SP
Term
4 basic mechanisms of HA
Definition
inc ICP, vascular distention, inflammation, muscle contraction
Term
signs/sx of migraine
Definition
prodrome, sometimes w/ visual changes; throbbing, pounding, unilateral pain; photosonophobia, dizzy, N+V
Term
signs/sx of cluster HA
Definition
periorbital pain, ipsi red watery eye, transient Horner's, nasal d/c
Term
2 theorys of migraine pathophys
Definition
1. vascular reactivity 2. Trigeminovasc theory
Term
migraine aborting drugs
Definition
ergot alkaloids (DHE), (suma)triptan
Term
migraine prevention drugs
Definition
b-blockers, Ca chann blockers, methysergide, TCA, valpro
Term
signs/sx of tension HA
Definition
steady, bandlike pressure, little autonomic stuff
Term
rx of tension HA
Definition
TCA, anti-inf, stress avoidance
Term
what is pseudotumor cerebri
Definition
inc ICP (impaired CSF resorption?)
Term
rx for pseudotumor cerebri
Definition
shunt, acetazolamide
Term
what populations are at highest risk for temp arteritis?
Definition
elderly
Term
what are associated findings with temp arteritis?
Definition
polymyalgia, high ESR
Term
rx for temp arteritis?
Definition
corticosteroids
Term
danger of temp ateritis?
Definition
blindness
Term
ominous HA signs
Definition
no prior, sudden/prog worsening of chronic, wake up, seizure/loc, mem/person/neuro
Term
advantages of CT
Definition
rapid, less motion artifact, fresh hemmorhage, good skull bone pic
Term
disadvantages of CT
Definition
poor imaging of post fossa, rads, intrathecal contrast
Term
advantages of MRI
Definition
hi-res, greater path than CT, no bony artifact, multiple planes w/o repositioning pt
Term
disadvantages of MRI
Definition
slower, more sensitive to motion artifact, METAL!!!
Term
white on CT
Definition
BBC - blood, bone, calcium
Term
what are the two types of partial seizures?
Definition
simple, complex
Term
what are the two types of gen seizure?
Definition
non-con, con
Term
what is a simple partial seizure?
Definition
rythmic invo, tonic-clonic of body part w/o loc
Term
what is a complex partial seizure?
Definition
impaired conc, "staring into space", automatisms
Term
most frequent seizure focus?
Definition
med temporal lobe
Term
what is a gen, non-con seizure?
Definition
brief loc (absence)
Term
what is a gen, con seizure
Definition
grand mal
Term
mechs to prevent seizure?
Definition
collaterals to inhibitories, uptake of K by astros, spread of dendritic tree
Term
a malfunction of which part of the brain causes complex partial seizures?
Definition
med temp (hippo, amyg)
Term
what sort of channel is implicated in benign familial neonatal convulsions?
Definition
K-M
Term
what is neuromyotonia?
Definition
autoimmunie disease of V-gate K channels
Term
d myotonia
Definition
involuntary contractions following voluntary contractions
Term
channels implicated in myotonia?
Definition
Na/Cl
Term
human dom myotonia congenita, recessive myotonia congenita
Definition
Cl channel mediated
Term
hum dom myontonia congenita AKA
Definition
DMC, Thomsen's
Term
human paramyotonia congenita, hyperkalemic periodic paralysis
Definition
Na channel mediated
Term
sx of malignant hypertherm
Definition
rigidity, hypermet, fever
Term
cause of MH
Definition
mut of Ca channel in SR
Term
episodic ataxia 1, MG, Hyperplexia
Definition
K channel mediated
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