Module 22

Question 1

frequency/ wavelength determines

Answer 1

hue

Question 2

amplitutde/ weave height determines

Answer 2

intensity

Question 3

what is the order of transduction through the eye?

Answer 3

cornea, pupil, lens, rods/cones, bipolar cells, ganglion cells, optic nerve, thalamus, visual cortex of the occipital lobe

Question 4

cornea

Answer 4

protective outer layer that bends light to help provide focus

Question 5

pupil

Answer 5

adjustable opening in the center of the eye where light passes through

Question 6

iris

Answer 6

located around the pupil & controls the size of the pupil opening due to light intesity

Question 7

lens

Answer 7

changes shape to help focus images on the retina

Question 8

retina

Answer 8

contains receptor rods/cones alone w/ layers of neurons that begin the processing of visual info

Question 9

rods

Answer 9

detect black, white, gray, senstitive to movement, needed for peripheral/twilight vision

Question 10

cones

Answer 10

colors, function in daylight/well-lit conditions, detect fine detail

Question 11

bipolar cells

Answer 11

transfer the impulse to ganglion cells

Question 12

ganglion cells

Answer 12

recieve signals from bipolar cells & transmit them through their axons, forming the optic nerve

Question 13

optic nerve

Answer 13

carries neural impulses from the eye to the brain

Question 14

blind spot

Answer 14

an area w/no receptor cells, where the optic nerve connects to the eye

Question 15

fovea

Answer 15

central focal point in the retina, where the eye cones cluster

Question 16

light waves w/ longer wavelengths/low frequencies will produce which colors?

Answer 16

reddish colors

Question 17

light waves w short wavelengths/ high frequencies will produce which colors?

Answer 17

bluish colors

Question 18

frequency is to amplitude as intensity is to

Answer 18

brightness

Question 19

why are cones, rather than rods, better able to detect fine detail

Answer 19

cones have a dirrect connection to bipolar cells, whereas rods share bipolar cells with other rods