Visual Pathway (Ascending + Special Sense)

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Last updated 5:19 PM on 10/4/26
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13 Terms

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Light leaves object

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Light enters cornea with some refraction

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light travels through aqueous humor

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travels pass pupil

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travels through lens with some refraction

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travels pass vitreous humor

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reaches retina

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signal is picked up by first order neurons, those being photoreceptors (rods and cones), which causes an action potential

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first order neurons synapse with second order neurons (bipolar cells)

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second order neurons synapse with third order neurons (ganglion cells), converging and becoming Optic Nerve (CN II)

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At optic chiasm, the signals cross over where right signal goes to left side of brain and vice versa

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signal travels to LGN of Thalamus

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LGN of Thalamus sends signal to visual cortex in occipital lobe