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Flashcards in pons Deck (17):
1

what is a saccade?

d

2

what are smooth pursuit movements?

v

3

what is convergence?

f

4

what is conjugate movements?

f

5

what are vestibulo ocular movements?

h

6

what are optokinetic movements?

n

7

what happens if you're eyes don't move conjugately?

diploplia- eyes have to move both eyes together to keep picture in retina

8

what is the nucleus prepositus hypoglossi?

control center for holding of your eyes on an object

9

what is the corneal reflex?

touch the eye
spinal nucleus of 5 to cranial nerve 7 to close the eye -- direct reflex

10

what is the consensual reflex?

interneurons in spinal tract nucleus of 5 project to contralateral facial nucleus to close the opposite eye at the same time as the corneal reflex

11

what does the tectospinal tract connect?

connects CN 4 and 5
superior oblique of 4 is a synergist is needed to
inferior rectus of oculomotor nerve in order to move the eyes down

inf oblique and superior rectus are also synergists needed in order to move the eyes up

12

what does the paramedian RF control?

horizontal gaze

13

what does the mesencephalic RF control?

vertical gaze

14

1.5 syndrome

lesion of the L pons would take out abducens nucleus, MLF, and PPRF

when attempting to gaze R the R eye moves but the L eye does not

when attempting to gaze L neither eye moves

15

what is internuclear opthalmoplesia?

bilateral lesion of MLF

16

lesion in the cortex: where do they look?

look AWAY from hemiparesis

(or towards the lesion)

17

lesion in the brainstem: where do they look?

look TOWARDS the hemiparesis

(or away from the lesion)