Localization of ANS, Hypothalamic Disorders Flashcards
What areas of the hypothalamus can cause an ipsilateral horner’s?
medial, and posterior “sympathetic area”
What problems is a lesion in the anterior parasymp area known for in the hypothalamus
hyperthermia
insomnia
diabetes insipidis
emaciation
what problems would a lesion in the lateral “drinking center” of the hypothalamus cause?
adipsia
emaciation
apathy
what problems would a lesion in the medial hypothalamus cause?
hyperdipsia diabetes insipidus SIADH obesity rage amnesia ipsilateral Horner's
what problems would a lesion in the posterior “sympathetic area” of the hypothalamus cause
hypothermia poikilothermia hypersomnia, coma narcolepsy apathy ipsilateral Horner's
what does the suprachiasmatic nucleus of the hypothalamus do? where is it? what would lesion cause
it’s in the anterior region
it regulates the circadian rhythm
insomnia
location
fxn
lesion causes
for anterior nucleus of hypthalamus
anterior region
dissipates heat
hyperthermia
endogenous pyrogens can cause fever
fxn
lesion causes
for medial hypothelamaus
regulates feeding, prevents overeating
obesity
ex. PRader Willi, craniopharyngioma
where do descending hypothalamic fibers come from mostly?
the paraventricular nucleus of hypothalamus
how many neurons are involved in sympathetic input to the eye
3
pancoast tumor
spread of tumor (commonly lung) to sympathetic chain
cavernous sinus area problems that can affect sympathetics to pupillary dilator muscle
thrombus in ICA
rupture of ICA
pituitary adenoma
anisocoria
unequal pupils
miosis
small pupil
incontinence can be due to two things bladder dysfunction wise
hyperactive bladder-spastic
hypoactive bladder-flaccid
