eye

Question 1

cornea

Answer 1

transparent protective layer on the outside of eye

Question 2

pupil

Answer 2

opening at the front of eye, alike aperature

Question 3

lens

Answer 3

transparent structure that transports light to the back of eye

Question 4

retina

Answer 4

a layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses

Question 5

iris

Answer 5

colored part of eye, contains pupil

Question 6

cones

Answer 6

provide color vision, 120 mil in eye

Question 7

rods

Answer 7

They are sensitive to light levels and help give us good vision in low light.

Question 8

optic nerve

Answer 8

a bundle of more than 1 million nerve fibers that carry visual messages

Question 9

fovea

Answer 9

is a small depression within the neurosensory retina where visual acuity is the highest.

Question 10

blind spot

Answer 10

the point at which the optic nerve leaves the eye, creating a “blind” spot because no receptor cells are located there