lecture 7 - Rod cell Leaks out neurotransmitters in the...

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Rod cell Leaks out neurotransmitters in the dark o Inhibitory o Stimulated by light o Becomes hyperpolarized, stops releasing neurontrasmitters to allow action potentials Bipolar cells Synapse with ganglion cells that send impulses to the brain Only happens when leaking stops Cones Red cone o They absorb yellow better than red o Called red because they absorb red better than the others o Stimulated by yellow light Green cone o Called green because they absorb green better than the others o Stimulated by other Not evenly distributed in the retina Macula Is the center of visiual field Highest concentration of cones o Part of retina used to read, looking at things up close Fovea – only cones Blind spot Where nerves converge to form optic nerve, no receptors only axons One in each eye Ear Adapted for reception Equilibrium, balance 3 parts Outer – penna is used to funnel sound waves down the external ear canal into the tympanic membrane
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lecture 7 - Rod cell Leaks out neurotransmitters in the...

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