PNB 2XB3 - Central Vision Practice Questions and Answers | 100% Pass
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Course
PNB 2XB3
Institution
PNB 2XB3
PNB 2XB3 - Central Vision Practice
Questions and Answers | 100% Pass
For an on-center ganglion cell, what causes it to maximally fire? - Answer-light in
the center and darkness in the surround
What is the spontaneous level of activity or baseline for a ganglion cell? - Answer-
when the entire ...
the nasal pathways decussate through the - Answer✔✔-optic chiasm
what axons are in each optic tract? - Answer✔✔-temporal retina axons of the
ipsilateral eye, and the nasal retina axons of the contralateral eye
contralaterality in the visual system can be seen starting in the - Answer✔✔-optic
tract
pretectum - Answer✔✔-area in the brainstem to control pupil dilation (unconscious) -
some axons from the retina go here
superchiasmatic nucleus - Answer✔✔-part of the hypothalamus, which regulates
circadian rhythms - some axons from the retina go here
the optic tract runs to the ...., found in the.... - Answer✔✔-lateral geniculate nucleus -
thalamus
the LGN receives glutamate from the ... and their axons fan out in what's known as the
... - Answer✔✔-optic tract - optic radiation
right monocular blindness - Answer✔✔-a legion in the optic nerve of the right eye
would make one blind in the right eye; thus, no input would come from the visual field of
the right eye
bitemporal hemianopsia - Answer✔✔-a legion in the optic chiasm would stop the
nasal retinal axons from decussating, cutting off their input. Since the nasal retina sees
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