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The PLR is the reflex in our eye that controls the size of the black circle in the center of our iris in response to the intensity of light hitting the retina. What does the 'P' stand for in PLR?

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Considering all the tissues and cells in your body, 25 million new cells are being produced each second.


1. The PLR is the reflex in our eye that controls the size of the black circle in the center of our iris in response to the intensity of light hitting the retina. What does the 'P' stand for in PLR?





 
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