Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Neuro > visual disorders > Flashcards

visual disorders Flashcards

1
Q

The fovea has a large concentration of (rods/cones).

A

cones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the function of rods and cones?

A

Cones: provide color
Rods: provide black and white

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Do rods or cones have the best resolution?

A

cones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where do ALL of the axons of the ganglion cells go?

A

Lateral Geniculate nucleus via the optic nerve/tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

definition: area found in the eye that activates/deactivates a ganglion cell

A

receptive body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What do the ganglion cells turn into?

A

Optic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which ganglion cells cross over in the optic chiasm?

A

Layers 1, 4, and 6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Where does the output of the lateral geniculate nucleus go to? How do they get there?

A

visual cortex (area 17) via optic radiations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

definition: fibers of the lateral geniculate nucleus that passes through the temporal lobe

A

meyer’s loops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What lobes help with visual processing?

A

occipital, temporal, parietal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the visual function of the temporal lobe?

A

object recognition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the visual function of the parietal lobe?

A

spatial recognition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the visual function of the superior colliculus?

A

Used in coordinating eye-head movements via tectospinal pathway

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the visual function of the suprachiasmatic nucleus (part of hypothalamus)?

A

involved in circadian rhythm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

definition: lesion that results in no visual in the corresponding eye

A

optic nerve cut

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

definition: lesion that results in the lateral visual fields of each eye not having visual information

A

optic chiasm lesion/ bitemporal hemianopsia

17
Q

example:
L hemianopsia: not being abble to see the L visual field in each eye

A

optic tract lesion/ homonymous hemianopsia

18
Q

definition: sparing the visual cortex dedicated to the fovea

A

macular sparing

19
Q

Visual cut disorders are tested by a CN __ exam.

A

CN I

20
Q

What does parietal lobe damage result in?

A

problem sensing movement

21
Q

What does temporal lobe damage result in?

A

problem recognizing objects

Neuro (45 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions