USAHS NEUROSCIENCE EXAM 3 NEWEST
2024 ACTUAL EXAM COMPLETE 100 EXAM
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW VERSION!!
After light enters the lens to the retina, what is the pathway
through the layers of retina to the optic nerve? - ANSWER-
Photoreceptors respond to light in receptive fields and form
excitatory or inhibitory synapses—to bipolar cells - and sends it
to the ganglion cells—where it sends it to the optic nerve
What are the two types of ganglion cells in the innermost layer?
- ANSWER- a. Parasol cells aka A cells, p-alpha
b. Midget cells aka B cells, p-beta
What ganglion cells respond to gross stimulus features and
mvmt and where to they project to? - ANSWER- a. Parasol cells
b. Project to magnocellular layer in LGN
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What ganglion cells responds to very fine visual details and
color? And what layer does it project to? - ANSWER- Midget
cells and parvocellular layers in LGN
T/F the medial geniculate nucleus is associate w the visual
pathway - ANSWER- a. False
b. LGN is associated w visual pathway
Optic nerve receives input from what? - ANSWER- the ganglion
cells
T/F the visual field of the right eye is carried by the right optic
nerve? - ANSWER- true
What is susceptible to compression by pituitary tumor? -
ANSWER- optic chiasm
T/F the optic chiasm receives visual input from the nasal side? -
ANSWER- a. False
b. It receives visual input from the temporal side
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What are the nasal fibers responsible for? - ANSWER- the
temporal part of the visual field
Damage to the optic chiasm will cause what? - ANSWER- a.
Bitemporal hemianopsia
b. Aka tunnel vision
The R optic tract is carrying info from R/L fibers which is R/L
visual field. Does this apply to one eye or both? - ANSWER- R
fibers
L visual field
both eyes
If there was damage to the R tract, what will it cause? -
ANSWER- Contralateral homonymous hemianopsia of L visual
field
Give me the pathway from the temporal visual field of the R eye
to the optic tract: - ANSWER- Temporal R visual field-
L nasal fibers-
R optic nerve -
optic chiasm -
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