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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
- 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
- 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
- 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
- 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
- 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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