Structure of the Eye

Question 1

cornea

Answer 1

a convex, transparent structure that covers the front part of the eye; bends light toward the center of the eyeball

Question 2

pupil

Answer 2

the opening at the center of the eye that light passes through; appears black

Question 3

iris

Answer 3

controls the amount of light that enters; the muscle that opens and closes in response to environmental and internal conditions, and gives the eye its colors

Question 4

lens

Answer 4

a curved transparent structure that adjusts to focus images to the rear of the eye; light passes through

Question 5

vitreous humor

Answer 5

jelly-like fluid that light travels through before reaching the eye

Question 6

retina

Answer 6

the rear of the eye which contains our photoreceptor cells

Question 7

visual accommodation

Answer 7

the focused image that reaches the retina has been inverted by the curvature of the lens in this process

Question 8

How does the image get corrected?

Answer 8

the brain corrects the images it receives

Question 9

Rods

Answer 9

photoreceptor cells for night and peripheral vision that are sensitive in low light; look above or below an object in the dark to keep the image on the rods

Question 10

Cones

Answer 10

the photoreceptor cells for daylight and color vision; three types that allow us to process color

Question 11

Bipolar and ganglion cells

Answer 11

Whith a strong enough signal from rods and cones, these two are activates; first bipolar then ganglion (rear of the eye)

Question 12

optic nerve

Answer 12

axons from the ganglion cells make up the optic nerve, which sends the signal to the occipital lobe for processing

Question 13

fovea

Answer 13

cones are located around the fovea; the focal point of the retina; little bump in the back of the eye