False-colour SEM of rod & cone cells in the retina

False-colour SEM of rod & cone cells in the retina

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Caption: False-colour scanning electron micrograph (SEM) of rod and cone cells of the eye retina. Three cone cells (orange, lower centre) and more numerous rod cells (green, upper frame) are specialized light- sensitive cells. They occur on the surface of the retina. They are responsible for detecting visible images, which are transmitted as nerve impulses to the optic nerve and the brain. There are about 130 million rod cells in the human retina; they detect light intensity and so are important for day and night vision. While the less numerous cone-like cone cells (about 6.5 million in the human retina) respond specifically to colour. Magnification: x2,500 at 35mm size.

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Keywords: anatomy, cell, cone cell, cones, eye, false-coloured, human body, retina, rod cell, rods, sight, structure, vision, visual sense

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