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Photoreceptor cell

A cell, functionally part of the nervous system, that reacts to the presence of light. It usually contains a pigment that undergoes a chemical change when light is absorbed. This chemical change stimulates electrical changes in the photoreceptor that, when passed along and processed by other neurons, form the basis of vision.

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  • Part of Speech: noun
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  • Industry/Domain: Archaeology
  • Category: Evolution
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