3.1 Vision and the Eye Part 2

Question 1

What are the two photoreceptors in the eye?

Answer 1

rods
cones

Question 2

What are rods?

Answer 2

cells that are stimulated in dim light

Question 3

Which photoreceptor is more sensitive to light?

Answer 3

rod

Question 4

Which photoreceptors operate in bright light?

Answer 4

cones

Question 5

Which photoreceptors help generate sharp color images?

Answer 5

cones

Question 6

Where is the lens located?

Answer 6

posterior to the iris and pupil

Question 7

Where is the vitreous body located?

Answer 7

interior portion of the eye posterior to the lens

Question 8

What is the vitreous body filled with?

Answer 8

vitreous fluid

Question 9

What is the function of the vitreous body?

Answer 9

hold the retina firmly to the choroid

Question 10

What is the general pathway of light in the eye?

Answer 10

cornea - aqueous humor - lens - vitreous humor - retina

Question 11

Where do the photoreceptors send their signal?

Answer 11

optic nerve to the optic chiasm

Question 12

Where is the optic chiasm located?

Answer 12

base of the hypothalamus

Question 13

When do the optic tracts form?

Answer 13

after the optic chiasm

Question 14

Where do the optic tracts terminate?

Answer 14

lateral geniculate nucleus in the thalamus

Question 15

Where does the visual information travel after the LGN in the thalamus?

Answer 15

optic radiations to the primary visual area of the occipital lobe

Question 16

What are all of the visual fields of the eyes?

Answer 16

nasal
peripheral
binocular
left
right

Question 17

Where is the nasal visual field?

Answer 17

closest to the nose

Question 18

Where is the peripheral visual field?

Answer 18

lateral side of each eye

Question 19

What is the binocular visual field?

Answer 19

3-D vision created from overlapping information from the nasal visual fields

Question 20

Where is sensory information gathered from the left side of the body interpreted?

Answer 20

right side of the brain