Create a process map using the terms and phrases listed below. The order should

Question

Create a process map using the terms and phrases listed below. The order should reflect the events that take place when light enters the rods (after being exposed to dark). Refer to Figure 10.32 and related text in the Silverthorn textbook to help put the story together. 5. Signal moves along optic Bipolar cells activated Calcium-sodium channels close Decreased cyclic GMP Light absorbed by rhodopsin nerve Signal to thalamus Signal to visual cortex Stop Ca++ and Na. înflux Transducin activation ? Light enters rod Potassium efflux D Exocytosis of inhibitory signalRetinal dissociation O Rod hyperpolarization ceases Ganglion cells activated

Explanation / Answer

•Light enters rod

•Light is absorbed by rhodopsin

•Retinal dissociation

•Transducin activation

•Decreased cGMP

•Calcium and sodium channels close

•Stop calcium and sodium influx

•Rod depolarization

•bipolar cells get activated

•ganglion cells activated

•signal moves to optic nerve

•signal to thalamus

•signal to visual cortex

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