Chapter 6: Part 2 Flashcards
1
Q
where are the rods and cones located?
A
retina
2
Q
what are photoreceptors?
A
located in the retina, specifically rods and cones
3
Q
about how many rods does the retina contain?
A
120 million rods
4
Q
about how many cones does the retina contain?
A
6 million cones
5
Q
what is responsible for our day time vision?
A
cones, they provide the most visual information
6
Q
what are cones?
A
day-time vision, responsible for color vision, information on small features, source of vision of highest sharpness or acuity
7
Q
what are rods?
A
responsible for dimly lit environments, sensitive to light, night vision
8
Q
what is the fovea?
A
it is the central region of the retina
9
Q
what does the fovea do?
A
mediates the most acute vision
10
Q
what does the fovea contain?
A
contains only cones
