eyes

Question 1

review the parts

Answer 1

review the parts

Question 2

transparent tissue forming the outer surface of the eyeball

Answer 2

cornea

Question 3

the white portion of the eyes

Answer 3

sclera

Question 4

a muscular membrane whose dilation regulates the amount of light that enters the eye

Answer 4

iris

Question 5

the black-looking opening in the center of the iris

Answer 5

pupil

Question 6

a transparent body behing the iris that focuses an image on the retina

Answer 6

lens

Question 7

the area of the inner surface of the eye that contains rods and cones

Answer 7

retina

Question 8

cells that respond to light

Answer 8

photoreceptors

Question 9

neurons that conduct neural impulses from rods and cones to ganglion cells

Answer 9

bipolar cells

Question 10

neurons whose axons form the optic nerve

Answer 10

ganglion cells

Question 11

the nerve that transmits sensory information from the eye to the brain.

Answer 11

optic nerve

Question 12

rod-shaped photoreceptors that are sensitive only to the intensity of light

it allows us to see black and white

Answer 12

rods

Question 13

cone-shaped photoreceptors that transmit sensation of color

it provide color vision

Answer 13

cones

Question 14

an area near the center of the retina that is dense with cones and where vision is consequently most acute

Answer 14

fovea

Question 15

area of the retina where axons from ganglion cells meet to form the optic nerve

Answer 15

blind spot

Question 16

sharpness of vision

Answer 16

visual acuity

Question 17

a condition characterized by brittleness of the lens

Answer 17

presbyopia

Question 18

a person with normal color vision.

and is sansitive to red-green, blue-yellow, and light-dark.

Answer 18

trichromat

Question 19

a person who is sensitive to black and white only and

hence *color blind *

Answer 19

monochromat

Question 20

a person who is sensitive to black-white and either red-green or blue-yellow

and hence partially color-blind

Answer 20

dichromat