The Eye

Question 1

parts of the eye

Answer 1

sclera, cornea, pupil, lens, iris, ciliary body, chroid, retina, fovea, optic nerve

Question 2

cornea

Answer 2

reflects light toward the pupil

Question 3

aqueous humour

Answer 3

supplies cornea with nutrients and refracts light

Question 4

iris

Answer 4

regualtes the amount of light entering the eye

Question 5

pupil

Answer 5

the opening in the iris that allows light into the eye

Question 6

lens

Answer 6

focus the image on the retina

Question 7

ciliary muscles

Answer 7

open and closed the iris (uses tension)

Question 8

vitreous humour

Answer 8

maintains the shape of the eyball and permits light transmission to the retnis
- liquid within the eye

Question 9

retnia

Answer 9

contains photoreceptors

Question 10

rods

Answer 10

used for veiwing dim light

Question 11

cones

Answer 11

identify color

Question 12

fovea centralis

Answer 12

most light sensitive area of the retnia; contains only cones

Question 13

choroid layer

Answer 13

prevents light scattering

Question 14

sclera

Answer 14

supports and protects delicate photo cells
- first layer
- connects the the socket and provides structure