Term
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Definition
Receptor
sense light
low visual acuity/high contrast
night vision
located in periphery of retina |
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Term
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Definition
sense color
high visual acuity
function well in bright light
fovea contains only cones |
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Term
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Definition
1st order sensory neurons
contain 2 processes connect receptor to ganglion |
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Term
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Definition
2nd order synapse w/ bipolar
form optic nerve
converge at optic disc "papilla"
no receptors at papilla "blind spot"
subarachnoid surrounds O. nerve increase cranial pressure causes papilledema |
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Term
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Definition
detect directional movement
night vision
excited by rods |
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Term
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Definition
color vision
assoc. with cones |
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Term
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Definition
wide field of coverage for visual reflexes
respond to rapid change in visual image |
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Term
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Definition
interneurons
synapse with ganglion and bipolar
distribute visual info laterally "sweep" across the eye |
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Term
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Definition
interneuron
synapse w/ ganglion and bipolar
distribute visual info laterally "sweep" across the eye |
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