Brainscape's Knowledge GenomeTM

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


See full index

07 Retina > 07 Retina > Flashcards

07 Retina Flashcards

1
Q

Slide 17

Name the different types of bipolar cells (majority)

A
  • diffuse
  • midget
  • S cone
  • rod
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Slide 17/22

True or false. There are two types of midget bipolar cells responding to a single cone either the on cell or off cell. They are located mostly in the fovea.

A

True

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

Slide 18

.____ bipolar cells might get input from 30-50 ____. This is why night vision is blurry.

A. Rod/rods
B. Midget/rods
C. S cone/rods
D. Rod/ midget
A

A. Rod/Rods

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

Slide 20

True or False. Midget bipolar cells are intermediate cells that modulate ganglion cells.

A

False: Amacrine bipolar cells

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

Slide 20

What is the most common amacrine cell?

A

Starburst Amacrine cell

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

Slide 21

Blue-yellow ganglion cells distinguish different _____

A. shapes
B. wavelengths
C. Visual details

A

B. wavelengths

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

Slide 21

\_\_\_\_ ganglion cells get input from L and M cones in order to distinguish shape and luminance 
A. Parasol 
B. Midget
C. Blue-Yellow
D. Biplexiform
A

A. Parasol

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

Slide 7

True or false. More glutamate is released in the dark

A

true

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

Slide 7

True or false. The disks in rods regenerate and are replaced by outer segment cells.

A

False, they are replace by inner segment cells

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

Slide 8

True or false. The fovea centralis has the highest number of cones.

A

True

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

Slide 9

  1. There are _______ as many rods as cones.
    a. 5-10 times
    b. 15-20 times
    c. 30-40 times
    d. 50-60 times
A

b. 15-20 times

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

Slide 7

  1. The __________________ catches the photons.
    a. Synaptic terminal
    b. Outer segment
    c. Inner segment
    d. Bipolar cells
A

b. Outer segment

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

Slide 10

  1. True or false. Primates have two cone types but mammals have three.
A

False: primates have three cone types but most mammals have only two

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

Sldie 11

True or false. There are mechanisms to neutralize signals of L/M cone ratios

A

True

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

Slide 12

What do cone pedicles couple responses through?

A

Gap junctions

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

Slide 13

True or false. Horizontal cells are mostly inhibitory.

A

True

17
Q

Slide 13

Horizontal Cells sample activation from _____________

A

A broad area

18
Q

Slide 14

What are the two types of horizontal cells?

A

HI and HII

19
Q

Slide 14

HI cells connect to _____________

A

Rods, L and M cones

20
Q

Slide 15

True or false. HI cells have short arbors.

A

False, HI cells have long arbors

21
Q

Slide 16

What do HII cells connect to?

A

S, L and M cones

22
Q

slide 2

Light penetrates through which section of the retina first?

a) Ganglion cell layer
b) Inner synaptic layer
c) Inner limiting membrane
d) Inner nuclear layer

A

c) Inner limiting membrane

23
Q

Slide 2

Photoreceptors are found in which part of the retina?

A

Outer segment

24
Q

Slide 2

The retina has __________________ sections. Those sections are made of __________________cell layers and __________________ intermediate layers.

a) 5, 2, 3 intermediate layers
b) 5, 3, 2 intermediate layers
c) 5, 3, 3 intermediate layers
d) 5, 4, 3 intermediate layers

A

a) 5, 2, 3 intermediate layers

25
Q

Slide 3

True or false: Rods and cones in outer plexiform layer synapse with horizontal cells.

A

True

26
Q

Slide 4

True or false: photoreceptors respond to light by graded potential and not action potentials

A

True

27
Q

Slide 5

What are the 4 most common ganglion cells in the eye?

a) Large bodied cells, midget cells, stratified cells, parasol cells
b) Midget cells, horizontal cells, parasol cells, amacrine cells
c) parasol cells, bipolar cells, small bodied inner cells, amacrine cells
d) Parasol cells, midget cells, bistratified cell, small bodied inner cells

A

d) Parasol cells, midget cells, bistratified cell, small bodied inner cells

28
Q

Slide 5

Which type of ganglion cell codes for color?

a) Parasol cells
b) Midget cells
c) bistratified cell
d) Small bodied inner cells

A

b) Midget cells

29
Q

Slide 6

True or false: We have approximately 20 times more cones than rods

A

False

07 Retina (1 decks)

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