Vision B

Question 1

Pigmented epithelial cells store what vitamin in the photoreceptor?

Answer 1

Vit A

Question 2

Pigmented epithelial cells act as ___ to remove dead/ damaged cells

Answer 2

Phagocytes

Question 3

Rods (DO/ DO NOT) provided sharp color images

Answer 3

Do not

Question 4

Rods are sensitive to __ light and best suited for ___ vision

Answer 4

Dim light

Night vision

Question 5

Rods perceive input in ___ tones

Answer 5

Gray

Question 6

Cones need ___ light for activation

Answer 6

Bright

Question 7

Rods = ___ vision

Answer 7

Scotopic

Question 8

Cones= __ vision

Answer 8

Photopic

Question 9

Only __ has sufficient cone density to provide detailed color vision

Answer 9

Fovea

Question 10

Entire visual field (1/1000) is in hard focus at a given moment= __ focus

Answer 10

Fovea focus

Question 11

___ is a light absorbing molecule

Answer 11

Retinal

Question 12

Retinal is synthesized from Vit __

Answer 12

Vit A

Question 13

Vit A is stored in ___

Answer 13

Liver

Question 14

Phototransduction utilities ___ + phosphodiesterase for energy

Answer 14

cGMP

Question 15

Photoreceptors and bipolar cells (DO/ DO NOT) generate action potentials

Answer 15

DO Not

—-generate graded potentials

Question 16

Nyctalopia (night blindness) = ___ of the rod system

Answer 16

Malfunction

Question 17

Most fibers of the optic tract continue to ___ of the thalamus

Answer 17

Lateral geniculate body

Question 18

Light signals are relayed to the midbrain ____

Answer 18

Pretectum

Question 19

From the pretectum; preganglionic, parasympathetic neurons are located in ___ nucleus

Answer 19

Edinger-Westphal

Question 20

In the pupillary light reflex, preganglionic fibers travel with ___ nerve to the ____ ganglion

Answer 20

Oculomotor nerve

Ciliary ganglion