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Download nanoscope analysis8/23/2023 ![]() This culminates in the transmission of the signal to the brain, which perceives it as a vision. These types of cells are known as photoreceptor cells. ![]() They respond to light by transmitting a signal that triggers a cascade of biochemical reactions. The retina which is the inner part of the eye contains two major types of light-sensitive photoreceptor cells used for vision: the rods and the cones. The eyeball has three distinct layers the fibrous tunic, the vascular tunic, the nerve tunic (light sensitive retina). The eye is composed of eyeball, the optic nerves and the accessory structures eyeballs, conjunctivae, lacrimal apparatus and extraocular muscles. This organ works like a camera light let on by the cornea is controlled by the pupil and is charged into electrical signals by the retina and sent to the brain where the signals are interpreted into visual images. It is one of the most complex organs in the body which gives us a sense of sight allowing vertebrae to learn more about the around the world.
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