Flashcards in Prep for Final Deck (15):
What nuclei does the facial nerve go to?
(It goes to four nuclei)
1) Facial Motor Nucleus, which is responsible for muscles of facial expression (plus stapedius)
2) Nucleus Solitarius, which is responsible for taste perception (specifically for this nerve, from the anterior 2/3 of the tongue)
3) Superior Salivary Nucleus, which is responsible for salivation and lacrimation
4) Spinal Trigeminal Nucleus, which is responsible for skin pain/temp sensation (5,7,9,10; for 7, from a tiny little piece of the external ear)
Balint syndrome =
1) optic ataxia
2) optic apraxia
(inability to accurately reach for objects),
(inability to voluntarily guide eye movements/ change to a new location of visual fixation)
(inability to perceive more than one object at a time, even when in the same place).
Optic ataxia + optic apraxia + simultanagnosia = ?
Where is this lesion located?
Bilateral posterior parietal
ACA + MCA symptoms
contralateral hemiparesis, gaze deviation, aphasia.neglect, visual field cuts
Lenticulostriates and choridals supply ...
Internal capsule and basal ganglia
brainstem, CN, consciousness
visual field cuts, memory/limbic dysfunction, thalamus (vision loss?)
unilateral hearing loss,a tai a, vertigo, nystagmus