Prep for Final

Question 1

What nuclei does the facial nerve go to?

It goes to four nuclei

Answer 1

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)

Question 2

Balint syndrome =

Answer 2

1) optic ataxia
2) optic apraxia
3) simultanagnosia

Question 3

Optic ataxia

Answer 3

(inability to accurately reach for objects),

Question 4

Optic apraxia

Answer 4

(inability to voluntarily guide eye movements/ change to a new location of visual fixation)

Question 5

Simultanagnosia

Answer 5

(inability to perceive more than one object at a time, even when in the same place).

Question 6

Optic ataxia + optic apraxia + simultanagnosia = ?

Where is this lesion located?

Answer 6

Bilateral posterior parietal

Question 7

ICA lesions

Answer 7

ACA + MCA symptoms

Question 8

ACA lesion

Answer 8

leg weakness

Question 9

MCA lesion

Answer 9

contralateral hemiparesis, gaze deviation, aphasia.neglect, visual field cuts

Question 10

Lenticulostriates and choridals supply …

Answer 10

Internal capsule and basal ganglia

Question 11

Basilar supplies

Answer 11

brainstem, CN, consciousness

Question 12

PCA lesion

Answer 12

visual field cuts, memory/limbic dysfunction, thalamus (vision loss?)

Question 13

SCA lesion

Answer 13

ataxia, nystagmus

Question 14

AICA lesion

Answer 14

unilateral hearing loss,a tai a, vertigo, nystagmus

Question 15

PICA/vertebral lesion

Answer 15

ataxia, vertigo, nystagmus, dysarthria, dysphagia