Term
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Definition
Light strikes rhodopsin in rod cells:
-retinal portion changes shape
-initiates signal transduction involving trasducin |
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Term
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Definition
| G protein(transducin) activates esterase that hydrolyzes cGMP reducing its concentration |
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Term
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Definition
Ion channels close
-membrane becomes hyperpolarized |
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Term
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Definition
Rod cells release less glutamate
-fewer signals transmitted |
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Term
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Definition
Bipolar cells become depolarized
-release neurotransmitter that stimulates ganglion cells |
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Term
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Definition
| Axons of ganglion cells(optic nerves) transmit info to lateral geniculate nuclei in thalamus |
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Term
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Definition
| Neurons project to primary visual cortex and integration centers in cerebral cortex |
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