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PSYCH 3: EXAM 2 (CH 3,6,7) > Chapter 7 > Flashcards

Chapter 7 Flashcards

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1
Q

retina

A

receptive surface on eye that contains photoreceptors (rods and cones) and other neurons (bipolar and ganglion cells)

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2
Q

transduction

A

conversion of one form of energy to another

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3
Q

cornea

A

transparent outer layer of eye; bends light rays

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4
Q

what is the cornea responsible for?

A

forming image on retina

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5
Q

refraction

A

beinging of light rays by change in density of beium

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6
Q

lens

A

structure in eye that helps focus an image on the retina

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7
Q

accommodation

A

process where ciliary muscles adjust lens to bring nearby objects into focus

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8
Q

myopia

A

nearsightedness; inability to focus the retinal image of objects that are far away

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9
Q

extraocular muscle

A

muscle attached to eyeball that controls its position and movements

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10
Q

photoreceptor

A

cell in neuron that responds to light

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11
Q

rods

A

photoreceptor that is most active in low levels of light

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12
Q

cones

A

photoreceptor that is most active in high levels of light

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13
Q

bipolar cell

A

interneuron that receives information from photoreceptors and passes information to ganglion cells

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14
Q

ganglion cell

A

any cell in the retina whose axons aid in the formation of the optic nerve

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15
Q

optic nerve

A

cranial nerve II; collection of ganglion cell axons that extends from retina to brain

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16
Q

amacrine cells

A

contacts both bipolar and ganglion cells

17
Q

what is special about amacrine cells?

A

they have important inhibitory interactions within the retina

18
Q

scotopic system

A

system in retina that operates in low levels of light using rods

19
Q

photopic system

A

system in retina that operates in high levels of light using cones

20
Q

convergence

A

one cell receives many different signals from different cells

21
Q

rhodopsin

A

photopigment in rods that responds to light

22
Q

pupil

A

opening formed by the iris that allows light to enter the eye

23
Q

iris

A

provides opening to form pupil

PSYCH 3: EXAM 2 (CH 3,6,7) (2 decks)

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