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NUERO-ANATOMY > 2-3 visual & limbic systems > Flashcards

2-3 visual & limbic systems Flashcards

1
Q

cornea

A

prevents damage to eye

keeps in aqueous humor

slightly bends the light to direct it into pupil

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2
Q

iris

A

colorful part of eye

helps regulate amount of light that passes through to your pupil

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3
Q

pupil

A

the little hole inside of your iris

where the light enters eye

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4
Q

lens

A

focuses the light into retina

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5
Q

retina

A

refracted/bent light converges on the retina’s photoreceptors

film of the camera - without it you can’t really process what you see

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6
Q

photoreceptos

A

bottoms layer of retina

rods & cones

sense light

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7
Q

bipolar cells

A

middle layer of retina

transmit signals from the photoreceptors to the ganglion cells

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8
Q

ganglion cells

A

top layer of retina

transmit the retinal info to the midbrain

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9
Q

rods

A

peripheral region of the retina

sensitive to light & movement

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10
Q

cones

A

central region of the retina

mediate color vision

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11
Q

photon

A

basic unit that makes up light

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12
Q

how does the eye convert photons to neural signals

A

rods & cones convert photons into nerve potentials that travel through the axons

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13
Q

optic radiations

A

travel from the thalamus to the occipital lobe

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14
Q

visual field

A

a portion of your visual field is only seen by one eye & some portions are seen by both eyes

light rays strike corresponding retinal parts & merge into 1 object in the cortex

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15
Q

dorsal stream

A

integrated motion

temporal & spatial

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16
Q

ventral stream

A

complex & cognitive aspects

recognizing objects
faces
visual memory
reading

17
Q

roles of the limbic system

A

emotional brain

structures lying deep within cerebral hemispheres

coordinated behaviors needed to satisfy motivational & emotional urges

memory

18
Q

hippocampus

A

learning & memory

19
Q

amygdala

A

emotions & aggression

20
Q

hypothalamus

A

huger, thirst, temp control

21
Q

thalamus

A

relay center for sensory info

22
Q

fornix

A

connects the limbic lobe to diencephalon & brainstem

23
Q

medial forebrain bundle

A

connects brainstem to basal ganglia

24
Q

septal area

A

links hypothalamus & midbrain

25
Q

reward centers

A

hypothalamus

septum

amygdala

thalamus

basal ganglia

26
Q

punishments centers

A

periaqueductal grey

hypothalamus

thalamus

27
Q

kluver-bucy syndrome

A

anterior parts of both temporal lobes destroyed

also removes bilateral amygdalas

28
Q

kluver-bucy symptoms

A

fearlessness

extreme curiosity

forgets rapidly

tendency to place everything in mouth & try to eat stuff

vicious & unnatural sex drive

NUERO-ANATOMY (9 decks)

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