Anatomy - Vision (Part 2) - Photoreceptor Signaling & Photobleaching

The video tutorial explores the physiology and biochemistry of retinal cells, focusing on photoreceptors. It explains how photoreceptors are hyperpolarized in light, leading to the activation of ganglion cells. The tutorial delves into the structure and function of rhodopsin, a protein complex crucial for light detection. It describes the biochemical processes in darkness and light, including the role of cyclic GMP and sodium channels. The video also covers the photobleaching cycle, emphasizing the importance of vitamin A in regenerating 11-cis retinal. Finally, it sets the stage for the next video, which will discuss how visual signals are transmitted to the brain.

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