Parts If The Eye/vision

Question 1

Cornea

Answer 1

Protective covering where light first enters the eye

Question 2

Lens

Answer 2

Bends (refracts) light rays, focuses a flipped, inverted image onto the retina

Question 3

Retina

Answer 3

A thin structure at back of eye that contains two types of receptor cells

Question 4

Rods

Answer 4

Respond to black and white, low light more sensitive to motion

Question 5

Cones

Answer 5

Respond to color, good for day time vision

Question 6

Optic nerve

Answer 6

Carries visual information to the thalamus

Question 7

Blind spot

Answer 7

A place where the optic nerve exits the eye, has no receptor cells, so no vision

Question 8

Light waves

Answer 8

Electromagnetic waves that stimulate receptors in the eye

Question 9

Intensity

Answer 9

Amount of energy per unit of time (brightness)

Question 10

Wavelength

Answer 10

Distance between two wave crests

Question 11

Trichromatic theory

Answer 11

There are three types of cones that detect three wave lengths of light (blue, green, red)

Question 12

Negative afterimage

Answer 12

If you stare at a colored image and then stare at a white screen you then will see a colored afterimage

Question 13

Opponent-process theory

Answer 13

Receptor cells are arranged in pairs (red/green) (black/white)
If one color is stimulated, the other is inhibited