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NS
Visual reflexes
4
Other
Graduate
03/26/2013
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Term
Light Reflex
 Definition
i. CN II  brachium of superior colliculus  pretectal nucleus  edinger westphal nucleus  out parasympathetic preganglionic axons projecting to constrictor pupillae m. via CN III & to ciliary ganglion
Term
Accomodation
 Definition
i. CN II  lateral geniculate nucleus  Occipital lobes (area 17, 18, 19)  out superior colliculus  MLF oculomotor M. to muscle of the eye (medial rectus)  edinger westphal nucleus  CN III  preganglionic neurons  ciliary ganglion  postganglionic ganglion  short ciliary neurons  constrictor pupillae m.  change of the shape of the lens
Term
Vestibular
 Definition
ii. Semicircular canals/otoliths  vestibular N.  vestibular nuclei  MLF  CN III, IV, VI to coordinate the gaze as the head moves
Term
Caloric Test COWS
 Definition
test for nystagmus
cold h2o in ear eyes move away
warm h2o in ear eyes move toward
irrigate both ears eyes group
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