Explain how the iris alters the size of the pupil

      

Explain how the iris alters the size of the pupil

  

Answers


Lydia
in bright light/high intensity, the circular muscles contract and radial muscles relax, the pupils becomes smaller, in dim light/ low light intensity circular muscles relax, and radial muscles contract and the pupil becomes bigger/wider
lydiajane74 answered the question on October 27, 2017 at 09:39


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