nov.12 pt3 Flashcards
1
Q
Ratio of rods to cones
A
20 to 1
2
Q
Photoreceptor cell type with more photopigments
A
rods
3
Q
difference in convergence of rods and cones
A
fewer cones make synaptic connections with a single bipolar cell
4
Q
convergence of cones and BP cells at the fovea
A
one to one
5
Q
more sensitive to light
A
rods b/c they have more photopigments
6
Q
sufficient to activate rods
A
single photon
7
Q
sufficient to activate cones
A
tens to hundreds of photons
8
Q
faster reponse to light
A
cones
9
Q
rods are used mainly for
A
night vision
10
Q
rods have high , but low
A
sensitivity, resolution
11
Q
why rods have low resolution
A
high degree of convergence
12
Q
acuity
A
sharpness
13
Q
no color
A
rods
14
Q
spatial resolution highest in the
A
fovea
