Brainscape's Knowledge GenomeTM

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


See full index

anatomy block 4 > Visual system part 2 > Flashcards

Visual system part 2 Flashcards

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

ant; post in primary visual cortex

A

Peripheral vision; Central vision

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

expanded cortical representation

A

Central vision

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

goes through macula

and has expanded cortical representation

A

Central vision

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

most area 17 neurons have a preference for input

A

from one eye)(monocular)

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

Axons from LGN course to the primary visual cortex (area 17) and synapse on

A

layer IV neurons.

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

monocular; binocular

A

Layer IV neurons; Layer II/III, V and VI neurons

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

simple and complex cell

A

area 17

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

orientation of a line.

A

simple cell

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

may be direction sensitive or respond best to a corner, cross or x.

A

Complex cells

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

Cell column that prefer the same line orientation

A

Orientation Column

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

Cell clusters that respond to color

A

Color-Sensitive Region

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

wavelength sensitive

A

Color-Sensitive Region

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

Cell column that respond to input from either the R or L eye OR in the case of binocular cell, have a strong preference for the R or L eye

A

Ø Ocular Dominance Column

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Hypercolumn

A

refer to a set of orientation and ocular dominance columns that receive input from a given point in the visual field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Primary visual cortex

A

projects to extrastriate visual areas where neurons require complex stimuli for maximal activation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Primary visual cortex respond to

A

fundamental aspect of a visual stimulus (orientation, contrast, motion, color, eye of origin)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Dorsal (“M”) Stream

A

where

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

perception of motion

A

posterior parietal association cortex

(from Dorsal (“M”) Stream)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

visual information travels to the inferior temporal association cortex

A

Ventral (“P”) Stream

23
Q

Ventral (“P”) Stream

A

what

24
Q

size, shape, color, orientation

A

inferior temporal association cortex

(Ventral (“P”) Stream)

25
Q

inferior temporal cortex

A

Lesion to V4

26
Q

Lesion to V1

A

Scotoma (bind spot)

27
Q

Lesion to V5

A

parietal pathway

28
Q

achromatopsia

A

color recognition

(Lesion to V4 à inferior temporal cortex)

29
Q

object recognition

A

(agnosia)

(• Lesion to V4)

30
Q

face recognition

A

prosapagnosia

(fusiform face area)

(Lesion to V4)

31
Q

Projections to the superior colliculus play a role in

A

visual orientating reflexes

32
Q

head to visual stimuli

A

Tectospinal Tract

33
Q

Tectospinal Tract

A

contralat

34
Q

sphincter pupillae

A

innervated by Postganglionic parasympathetic fibers

35
Q

Preganglionic parasympathetic fibers (travel with CN III)

A

to ciliary ganglion

36
Q

tf from the pretectal nucleus travel bilaterally to Edinger-Westphal Nucleus

in Pupillary Light Reflex

A

t

37
Q

TF in the Pupillary Light Reflex the Temporal optic fibers innervate ipsilateral pretectal area

A

T

38
Q

Edinger-Westphal Nucleus

A

Pupillary Light Reflex

41
Q

Ø Pretectal area bilaterally innervates

A

Edinger-Westphal nucleus (EWN)

Pupillary Light Reflex

42
Q

Fibers from EWN travel to the ipsilateral ciliary ganglion via

A

CN 3

Pupillary Light Reflex

43
Q

short ciliary nerves

A

Fibers from the ciliary ganglion travel to the ipsilateral eye

Pupillary Light Reflex

44
Q

pupillary constrictor

A

Pupillary Light Reflex

45
Q

Your patient presents with blindness in the right eye. Where is the lesion?

A

right retina or right optic nerve

46
Q

bitemporal hemianopia/hemianopsia

A

Hemianopia/hemianopsia - loss of half of a visual field. Bitemporal hemianopia means that there is loss of vision in both the right and left temporal visual fields

47
Q

direct pupillary light reflex

A

Illuminated eye—

48
Q

—consensual pupillary light reflex

A

ØNon-illuminated eye

49
Q

right homonymous hemianopsia

A

Lesion to the left optic tract Lesion to the left LGN Lesion to the left optic radiations Complete lesion to the left primary visual cortex (area 17, V1)

50
Q

papillary light reflex, you shine a light in your patient’s right eye. You note that the right pupil constricts, but the left pupil remains unchanged.

A

left Edinger Westphal nucleus

left CN-III

left ciliary ganglion

51
Q

Light directed to either eye causes

A

bilateral constriction of the pupils

in Pupillary Light Reflex

54
Q

Damage to the midline fibers of the optic chiasm may be caused by a

A

pituitary tumor.

55
Q

right homonymous hemianopia means that there is

A

loss of vision in the right visual field

anatomy block 4 (16 decks)

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