Eye functions

Question 1

Cornea

Answer 1

-Allow light to enter eye & partially focus light through bending/ refraction
-Protects front of eye

Question 2

Rods

Answer 2

-Light sensitive
-No colour (white, black, grey)
-Doesn’t need to much light
-Low light vision

Question 3

Retina

Answer 3

Contain photoreceptor cells that captures light and generates neural messages

Question 4

Pupil

Answer 4

Opening that permits the passage of light from front to back of eye

Question 5

Sclera

Answer 5

Layer that protects & maintains eyeball shape (white)

Question 5

Iris

Answer 5

Regulates that amount of light that passes through to the back of eye

Question 6

Cones

Answer 6

-red, green, blue (3)
-Day light vision
-Need more light
-Not light sensitive

Question 7

Choroid

Answer 7

-Thin, dark layer that absorbs light energy
-Supples oxygen & nutrients to retina through blood vessels

Question 8

Lens

Answer 8

Bends & focus the light ray onto the fovea centralis

Question 9

Optic nerve

Answer 9

Sends electrochemical messages to brain (Occipital lobe)

Question 10

Fovea centralis

Answer 10

Site of highest concentration of cones