Eye Part 2

Question 1

What are photopigments?

Answer 1

Question 2

how do we see colours?

Answer 2

Question 3

What are the colour vision disorders?

Answer 3

Question 4

What is visual transduction? Describe the pathway in which the retinal acts as a light absorbing molecule.

Answer 4

Question 5

Describe the 4 steps that Rhodopsin (photopigment) responds to light:

Answer 5

Question 6

How do photoreceptors act in darkness?

Answer 6

Question 7

What is the operation of rods in light?

Answer 7

Question 8

Describe the 4 steps in which photoreceptors go through when there is light

Answer 8

Question 9

Understand this diagram on phototransduction

Answer 9

-

Question 10

Differentiate 7 steps of photoreceptors in the dark and light

Answer 10

Question 11

What are the two groups of Bipolar cells?

Answer 11

Question 12

What happens to Bipolar cells in light and dark conditions?

Answer 12

Question 13

What do on/off centre Bipolar cells contain?

Answer 13

Question 14

What is the response of one & off Bipolar cells to glutamate?

Answer 14

Question 15

What 2 modes of action does glutamate have?

Answer 15

Question 16

Describe the nature of receptive fields

Answer 16

Question 17

Describe the mode of action that ensues to enhance vision/ receptive fields

Answer 17

Question 18

How does the eye adapt to bright and dark light?

Answer 18

Question 19

In detail explain light and dark adaptation

Answer 19

Question 20

In the eye what cells are converging?

Answer 20

Question 21

Descirbe the visual pathway of the eye

Answer 21

Question 22

Understand Binocular Vision

Answer 22