CD 680 Question and answers 100% correct CD 680: Exam 2 Visual System
predator - correct answer eyes in front
3d: depth perception
prey - correct answer eyes on side
why is there visual field that only one side can see? - correct answer - nose is in the way
- eye is more lateral...
CD 680: Exam 2 Visual System
predator - correct answer ✔eyes in front
3d: depth perception
prey - correct answer ✔eyes on side
why is there visual field that only one side can see? - correct answer ✔- nose
is in the way
- eye is more lateral (to that side)
lived experience - correct answer ✔what you see is based on your
_________.
"When you're. a Jet, you're a Jet all the way" - correct answer ✔neurons
carry one type of information all the way through the chain of axons
somatotopy - correct answer ✔representation of body
tonotopy - correct answer ✔representation of sounds
retinotopy - correct answer ✔representation of vision
4 important cranial nerves for vision: - correct answer ✔optic nerve
oculomotor nerve
trochlear nerve
abducens nerve
, cranial nerves for eye movement - correct answer ✔3, 4, 6 (oculomotor,
trochlear, abducens)
3rd Nerve Palsy - correct answer ✔- due to aneurysm, diabetic ischemia,
brainstem infarction
- inability to turn the eye up, down, or inward
- at rest, eye is deviated down and temporally
- iris sphincter may be involved: less able to control how wide the eye will
open
symptoms include:
- diploplia (double vision)
- ptosis (drooping eyelid)
- dilated pupils
iris sphincter - correct answer ✔The muscle that closes the pupil of the eye
is called the _____.
third nerve - correct answer ✔allows the eye to move up, down, or in
- some control of iris sphincter
- helping to hold the eyelid up
closed all the way - correct answer ✔In severe third nerve palsy, the eyelid
may be ________ and might not be able to lift it at all.
In severe ____ nerve palsy, the eyelid may be closed all the way and might
not be able to lift it at all. - correct answer ✔third nerve palsy
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