parts of the eye

Question 1

what parts move, and why do they do so?

Question 2

cornea

Answer 2

step 1, protective layer of the eye, bends light and focuses it to allow entry

Question 3

in what order does light go through the eye?

Answer 3

1. cornea
2. pupil
3. lens
4. retina
   a. rods/cones, chemical changes activate nearby —->
   b. bipolar cells, which activate —–>
   c. ganglion cells which make up the optic nerve
5. carried to brain to be distributed by thalamus
   6.visual cortex
   a. feature detector cells receive info from ganglions, send to supercell clusters based on specific edge/line/angle/movement
   b. supercell clusters decode tje scene’s larger/more complex patterns
   c. neural teams integrate and compare results to memory

Question 4

pupil

Answer 4

small opening, adjusted by iris surrounding it (colored one), so distinctive that can be used like thumbprint (and each eye is different)

Question 5

lens

Answer 5

literal lense behind pupil that focuses light onto retina, accommodates for different distances by changing curvature

Question 6

retina

Answer 6

surface inside of eye which receives light (contains rods and cones), transfers light into first stage of impulses

Question 7

fovea

Answer 7

central retinal focus area where cones cluster around

Question 8

true/false: many rods directly connect to the brain via single bipolar cell that relays message to visual cortex, thus allowing for finer detail/control

Answer 8

false, this is true for most CONES

Question 9

true/false: retinas contain fetal brain tissue that migrated there, allowing them to begin processing information

Answer 9

true

Question 10

true/false: light hits your retina from opposite sidees

Answer 10

true

Question 11

supercell clusters

Answer 11

after feature detector cells respond to angles, lines, edges, and movements of visual stimuli, they are sent to various supercell clusters to respond to more complex patterns and see stuff like faces and houses