
Rods And Cones In Eye Of Fish #1

by Science Photo Library
Title
Rods And Cones In Eye Of Fish #1
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Light micrograph of the retina from a freshwater roach, Rutilus rutilus. The top of the photo shows the rods (thin) & cones (bulbous/purple), the light sensitive cells of the retina. The band forming an arc of dense cells (bottom) is the pigment layer, beneath which is the choroid contaning blood vessels. The cones are the receptors responsible for daylight & colour vision. Rods are responsible for night or dark" vision. The rest of the retina (not visible) consists of layers of functionally different nerve cells. They transmit visual information as electrical signals to the ganglion nerve, which is connected to the brain. Mag: X63 (at 35mm size)."
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September 24th, 2018
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